Log message:
py-libxml2: remove trailing whitespace

Log message:
*libxml2: update to 2.12.4

v2.12.4: Jan 15 2024

### Regressions

- parser: Fix regression parsing standalone declarations
- autotools: Readd --with-xptr-locs configuration option
- parser: Fix build --without-output
- parser: Don't grow or shrink pull parser memory buffers
- io: Fix memory lifetime issue with input buffers

v2.12.3: Dec 12 2023

### Regressions

- parser: Fix namespaces redefined from default attributes

### Build fixes

- include: Rename XML_EMPTY helper macro
- include: Move declaration of xmlInitGlobals
- include: Add missing includes
- include: Move globals from xmlsave.h to parser.h
- include: Readd circular dependency between tree.h and parser.h

v2.12.2: Dec 5 2023

### Regressions

- parser: Fix invalid free in xmlParseBalancedChunkMemoryRecover
- globals: Disable TLS in static Windows builds
- html: Reenable buggy detection of XML declarations
- tree: Fix regression when copying DTDs
- parser: Make CRLF increment line number

### Build fixes

- build: Disable compiler TLS by default
- cmake: Update config.h.cmake.in
- tests: Fix tests --with-valid --without-xinclude

v2.12.1: Nov 23 2023

### Regressions

- hash: Fix deletion of entries during scan
- parser: Only enable SAX2 if there are SAX2 element handlers

### Build fixes

- autotools: Stop checking for snprintf
- dict: Fix '__thread' before 'static'
- fix: pthread weak references in globals.c (Mike Dalessio)
- tests: Fix build with older MSVC

v2.12.0: Nov 16 2023

### Major changes

Most of the known issues leading to quadratic behavior in the XML parser
were fixed. Internal hash tables were rewritten to reduce memory
consumption.

Starting with this release, it should be enough to add the --with-legacy
configuration option to provide maximum ABI compatibility. For example,
if a code module was removed from the default configuration, the option
will add stubs for the removed symbols.

libxml2 will now store global variables in thread-local storage if supported
by the compiler. This avoids allocating the data lazily which can result in
a fatal error condition. A new API function xmlCheckThreadLocalStorage
was added so the allocation can be checked earlier if compiler TLS is not
supported. To prepare for future improvements, some API functions now expect
or return a const xmlError struct.

Several cyclic dependencies in public header files were fixed. As a result,
certain headers won't include other headers as before.

Refactoring of the encoding code has been mostly completed. Calling
xmlSwitchEncoding from client code is now fully supported, for example to
override the encoding for the push parser.

When parsing data from memory, libxml2 will now stream data chunk by chunk
instead of copying the whole buffer (possibly twice with encodings),
reducing peak memory consumption considerably.

A new API function xmlCtxtSetMaxAmplification was added to allow parsing
of files that would otherwise trigger the billion laughs protection.

Several bugs in the regex determinism checks were fixed. Invalid XML
Schemas which previous versions erroneously accepted will now be
rejected.

### Deprecations

- globals: Deprecate xmlLastError
- parser: Deprecate global parser options
- win32: Deprecate old Windows build system

### Bug fixes

- parser: Stop switching to ISO-8859-1 on encoding errors
- parser: Support encoded external PEs in entity values
- string: Fix UTF-8 validation in xmlGetUTF8Char
- SAX2: Allow multiple top-level elements
- parser: Update line number after coalescing text nodes
- parser: Check for truncated multi-byte sequences

### Improvements

- error: Make more xmlError structs constant
- parser: Remove redundant IS_CHAR check in xmlCurrentChar
- parser: Fix stack handling in xmlParseTryOrFinish
- parser: Protect against quadratic default attribute expansion
- parser: Missing checks for disableSAX
- entities: Make xmlFreeEntity public
- examples: Don't use sprintf
- encoding: Suppress -Wcast-align warnings
- parser: Use hash tables to avoid quadratic behavior
- parser: Don't skip CR in xmlCurrentChar
- dict: Rewrite dictionary hash table code
- hash: Rewrite hash table code
- malloc-fail: Report malloc failure in xmlFARegExec
- malloc-fail: Report malloc failure in xmlRegEpxFromParse
- parser: Simplify xmlStringCurrentChar
- regexp: Fix status codes and handle invalid UTF-8
- error: Make xmlGetLastError return a const error
- html: Fix logic in htmlAutoClose
- globals: Move globals back to correct header files
- globals: Use thread-local storage if available
- globals: Rework global state destruction on Windows
- globals: Define globals using macros
- globals: Introduce xmlCheckThreadLocalStorage
- globals: Make xmlGlobalState private
- threads: Move library initialization code to threads.c
- debug: Remove debugging code
- globals: Move code from threads.c to globals.c
- parser: Avoid undefined behavior in xmlParseStartTag2
- schemas: Fix memory leak of annotations in notations
- dict: Update hash function
- dict: Use thread-local storage for PRNG state
- dict: Use xoroshiro64** as PRNG
- xmllint: Fix error messages
- parser: Fix detection of null bytes
- parser: Improve error handling in push parser
- parser: Don't check inputNr in xmlParseTryOrFinish
- parser: Remove push parser debugging code
- tree: Fix copying of DTDs
- legacy: Add stubs for disabled modules
- parser: Allow to set maximum amplification factor
- entities: Don't change doc when encoding entities
- parser: Never use UTF-8 encoding handler
- encoding: Remove debugging code
- malloc-fail: Fix unsigned integer overflow in xmlTextReaderPushData
- html: Remove encoding hack in htmlCreateFileParserCtxt
- parser: Decode all data in xmlCharEncInput
- parser: Stream data when reading from memory
- parser: Optimize xmlLoadEntityContent
- parser: Don't overwrite EOF parser state
- parser: Simplify input pointer updates
- parser: Don't reinitialize parser input members
- encoding: Move rawconsumed accounting to xmlCharEncInput
- parser: Rework encoding detection
- parser: Always create UTF-8 in xmlParseReference
- html: Remove some debugging code in htmlParseTryOrFinish
- malloc-fail: Fix memory leak in xmlCompileAttributeTest
- parser: Recover more input from encoding errors
- malloc-fail: Handle malloc failures in xmlAddEncodingAlias
- malloc-fail: Fix null-deref with xmllint --copy
- xpath: Ignore entity ref nodes when computing node hash
- malloc-fail: Fix null deref after xmlXIncludeNewRef
- SAX: Always validate xml:ids
- Stop using sprintf
- Fix compiler warning on GCC < 8
- regexp: Fix determinism checks
- regexp: Fix checks for eliminated transitions
- regexp: Simplify xmlFAReduceEpsilonTransitions
- regexp: Fix cycle check in xmlFAReduceEpsilonTransitions
- schemas: Fix filename in xmlSchemaValidateFile
- schemas: Fix line numbers in streaming validation
- writer: Add error check in xmlTextWriterEndDocument
- encoding: Stop calling xmlEncodingErr
- xmlIO: Remove some calls to xmlIOErr
- parser: Improve handling of encoding and IO errors
- parser: Move xmlFatalErr to parserInternals.c
- encoding: Rework error codes
- .gitignore: Split up and rearrange .gitignore files
- .gitignore: Add runsuite.log
- Stop calling xmlMemoryDump
- examples: Don't call xmlCleanupParser and xmlMemoryDump
- xpath: Remove remaining references to valueFrame

### Portability

- python: Make it compatible with python3.12 (Daniel Garcia Moreno)

### Build systems

- cmake: Check whether static linking dependencies found in config files
  (James Le Cuirot)
- autotools: Make --with-minimum disable lzma support
- build: Remove some GCC warnings
- Handle NOCONFIG case when setting locations from CMake target properties
  (Markus Rickert)
- cmake: Generate better pkg-config file for SYSROOT builds under CMake
  (James Le Cuirot)
- autoconf: Include non-pkg-config dependency flags in the pkg-config file
  (James Le Cuirot)
- autoconf: Don't bake build time CFLAGS into pkg-config file (James Le Cuirot)
- build: Generate better pkg-config files for static-only builds (James
  Le Cuirot)
- build: Generate better pkg-config file for SYSROOT builds (James Le Cuirot)
- autoconf: Allow custom --with-icu configure option

### Tests

- tests: Also test xmlNextChar in testchar.c
- tests: Start with testparser.c for extra tests
- fuzz: Raise rss_limit_mb
- fuzz: Test xmlTextReaderRead after EOF or failure
- fuzz: Test XML_PARSE_XINCLUDE | XML_PARSE_VALID
- tests: Handle entities in SAX tests
- fuzz: Disable XML_PARSE_SAX1 option in xml fuzzer
- tests: Add more tests for redefined attributes
- hash: Add hash table tests
- tests: Add ATTRIBUTE_NO_SANITIZE_INTEGER macro
- fuzz: Allow to fuzz without push, reader or output modules
- gitlab-ci: Add a "medium" config build
- python: Fix tests on MinGW
- test: Add push parser test with overridden encoding
- testapi: test_xmlSAXDefaultVersion() leaves xmlSAX2DefaultVersionValue set
  to 1 with LIBXML_SAX1_ENABLED (David Kilzer)
- gitlab-ci: Lower _XOPEN_SOURCE value
- testapi: Don't set http_proxy environment variable
- test: Add push parser tests for split UTF-8 sequences
- xinclude: Lower initial table size when fuzzing
- tests: Test streaming schema validation
- runtest: Skip element name in schema error messages

### Documentation

- doc: Add notes about runtest to MAINTAINERS.md
- doc: Don't document internal macros in xmlversion.h
- doc: Allow 'unsigned' without 'int'
- doc: Improve documentation of configuration options

v2.11.6: Nov 16 2023

### Regressions

- threads: Fix --with-thread-alloc
- xinclude: Fix 'last' pointer in xmlXIncludeCopyNode

### Bug fixes

- parser: Fix potential use-after-free in xmlParseCharDataInternal

v2.11.5: Aug 9 2023

### Regressions

- parser: Make xmlSwitchEncoding always skip the BOM
- autotools: Improve iconv check

### Bug fixes

- valid: Fix c1->parent pointer in xmlCopyDocElementContent
- encoding: Always call ucnv_convertEx with flush set to false

### Portability

- autotools: fix Python module file ext for cygwin/msys2 (Christoph Reiter)

### Tests

- runtest: Fix compilation without LIBXML_HTML_ENABLED

v2.11.4: May 18 2023

Fixes a serious regression.

- parser: Fix regression when push parsing UTF-8 sequences

v2.11.3: May 11 2023

Fixes more regressions.

- xinclude: Fix false positives in inclusion loop detection
- autotools: Fix ICU detection
- parser: Fix "huge input lookup" error with push parser
- xpath: Fix build without LIBXML_XPATH_ENABLED
- hash: Fix possible startup crash with old libxslt versions
- autoconf: fix iconv library paths (Mike Dalessio)

v2.11.2: May 5 2023

Fix regressions.

- threads: Fix startup crash with weak symbol hack
- win32: Don't depend on removed .def file
- schemas: Fix memory leak in xmlSchemaValidateStream

v2.11.1: Apr 30 2023

Fixes build and ABI issues.

- cmake: Fix va_copy detection (Luca Niccoli)
- libxml.m4: Fix quoting
- Link with --undefined-version
- libxml2.syms: Revert removal of version information

v2.11.0: Apr 28 2023

### Major changes

Protection against entity expansion attacks, also known as "billion laughs"
has been greatly improved. Malicious files should be detected reliably now
and false positives should be reduced. It is possible though that large
documents which make heavy use of entities are rejected now.

This release finally fixes symbol visibility on UNIX systems. Internal
symbols will now be hidden. While these symbols were never declared in public
headers, it was still possible to declare them manually. Now this won't work.

All symbol information has been removed from the ELF version script to fix
link errors with --no-undefined-version. The version nodes are kept so it
should still be possible to run binaries linked against older versions.

About 90 memory errors in code paths handling malloc failures have been fixed.
While these issues shouldn't impact security, this improves robustness under
memory pressure.

The XInclude engine has been reworked to properly support nested includes.

Several cases of quadratic behavior in the XML push parser have been fixed.

Refactoring has begun on some buffering and encoding code with the goal of
simplifying this part of the code base and improving error reporting.

Other highlights:

- Consolidated private header files.
- Major rework of the autoconf build.
- Deprecated several outdated and internal functions.

Special thanks to Google's Open Source Security Subsidies program for
sponsoring much of the work on this release!

Ongoing work on libxml2 relies on funding. For a list of important open
issues see <https://gitlab.gnome.org/GNOME/libxml2/-/issues/507>

### Security

- Fix use-after-free in xmlParseContentInternal() (David Kilzer)
- xmllint: Fix use-after-free with --maxmem
- parser: Fix OOB read when formatting error message
- entities: Rework entity amplification checks

### Regressions

- parser: Fix regression in xmlParserNodeInfo accounting

### Bug fixes

- Fix memory errors in code handling malloc failures
- encoding: Fix error code in asciiToUTF8
- xpath: number('-') should return NaN
- xmlParseStartTag2() contains typo when checking for default definitions for
  an attribute in a namespace (David Kilzer)
- uri: Fix handling of port numbers
- error: Make sure that error messages are valid UTF-8
- xinclude: Fix nested includes

### Improvements

- xmllint: Validate --maxmem integer option
- xmlValidatePopElement() can return invalid value (-1) (David Kilzer)
- parser: Rework EBCDIC code page detection
- parser: Limit name length in xmlParseEncName
- parser: Rework shrinking of input buffers
- html: Rely on CUR_CHAR to grow the input buffer
- parser: Rely on CUR_CHAR/NEXT to grow the input buffer
- valid: Make xmlValidateElement non-recursive
- html: Fix quadratic behavior in htmlParseTryOrFinish
- xmllint: Fix memory leak with --pattern --stream
- parser: Stop calling xmlParserInputShrink
- html: Impose some length limits
- valid: Allow xmlFreeValidCtxt(NULL)
- parser: Stop calling xmlParserInputGrow
- xinclude: Fix quadratic behavior in xmlXIncludeLoadTxt
- xinclude: Abort immediately if max depth was exceeded
- xpath: Only report the first error
- error: Don't move past current position
- error: Limit number of parser errors
- parser: Lower entity nesting limit with XML_PARSE_HUGE
- parser: Don't increase depth twice when parsing internal entities
- parser: Improve detection of entity loops
- parser: Only report a single entity error
- libxml.h: Remove dubious definition of LIBXML_STATIC
- html: Improve parsing of nested lists
- memory: Don't use locks in xmlMemUsed
- encoding: Remove unused variable xmlDefaultCharEncodingHandler
- Rework initialization code
- Add .editorconfig
- parser: Merge misc, prolog and epilog cases in push parser
- parser: Fix 'consumed' accounting when switching encodings
- html: Fix check for end of comment in push parser
- parser: Fix push parser with 1-3 byte initial chunk
- parser: Rewrite push parser boundary checks
- reader: Switch to xmlParserInputBufferCreateMem
- html: Don't escape ASCII chars in href attributes
- io: Don't shrink memory input buffers
- parser: Don't call xmlSHRINK from push parser
- parser: Ignore cdata argument in xmlParseCharData
- parser: Rework push parser parser progress checks
- io: Fix a few integer overflows in I/O statistics
- io: Rework xmlParserInputBufferGrow with encodings
- io: Remove xmlInputReadCallbackNop
- io: Check for memory buffer early in xmlParserInputGrow
- parser: Fix error message in xmlParseCommentComplex
- Bypass proxy in nanoHTTP for hosts in "no_proxy" (Markus Jörg)
- schemas: Fix infinite loop in xmlSchemaCheckElemSubstGroup
- threads: Remove check for pthread_equal
- xinclude: Rework XInclude cache
- xinclude: Remove inefficient refcounting scheme
- xmllint: Improve handling of empty XPath node sets
- parser: Fix potential memory leak in xmlParseAttValueInternal
- error: Don't use initGenericErrorDefaultFunc
- xpath: Lower XPath recursion limit on Windows
- Stop including sys/types.h
- Don't define WIN32 macro
- Make xmlNewSAXParserCtx take a const sax handler
- Consolidate private header files
- Remove internal macros from parserInternals.h
- Move some HTML functions to correct header file
- xmllint: Stop calling xmlSAXDefaultVersion
- Introduce xmlNewSAXParserCtxt and htmlNewSAXParserCtxt
- Don't mess with parser options in htmlParseDocument
- Remove useless call to htmlDefaultSAXHandlerInit
- Remove htmlDefaultSAXHandler from non-SAX1 build
- Don't initialize SAX handler in htmlReadMemory
- Fix htmlReadMemory mixing up XML and HTML functions
- Don't use default SAX handler to report unrelated errors
- Create stream with buffer in xmlNewStringInputStream
- xmlcatalog: Fix memory leaks

### Code quality

- xzlib: Fix implicit sign change in xz_open
- parser: Simplify calculation of available buffer space
- parser: Use size_t when subtracting input buffer pointers
- parser: Check for integer overflow when updating checkIndex
- xpath: Fix harmless integer overflow in xmlXPathTranslateFunction
- schematron: Use logical and
- relaxng: Remove useless if statement
- schemas: Remove useless if statement
- pattern: Merge identical branches
- regexp: Add sanity check in xmlRegCalloc2
- regexp: Simplify xmlRegAtomPush
- encoding: Cast toupper argument to unsigned char
- uri: Add explicit cast in xmlSaveUri
- buf: Fix return value of xmlBufGetInputBase
- parser: Fix integer overflow of input ID
- parser: Remove useless ent->etype test in xmlParseReference
- parser: Remove useless ent->children tests in xmlParseReference
- xmlmemory.c: Remove xmlMemContentShow
- libxml.h: Add comments and indentation
- libxml.h: Don't include stdio.h
- xmlexports.h: Disable docs for internal macro XMLPUBLIC
- parser: Simplify xmlParseConditionalSections
- io: Rearrange code in xmlSwitchInputEncodingInt
- warnings: Fix -Wstrict-prototypes warning
- warnings: Remove set-but-unused variables
- Fix compiler warnings in SAX2.c
- Fix unused variable warning in python/types.c
- Fix compiler warning in examples
- Fix compiler warnings in fuzzing code
- Remove unused code in nanohttp.c
- Remove or annotate char casts
- Don't use sizeof(xmlChar) or sizeof(char)
- Remove explicit integer casts

### Deprecations

- parser: Deprecate more internal functions
- parser: Deprecate some parser input functions
- parser: Deprecate xmlString*DecodeEntities
- threads: Deprecate some internal functions
- buf: Deprecate static/immutable buffers
- Deprecate internal parser functions
- Deprecate old HTML SAX API
- Generate deprecation warnings for old SAX API
- Mark more functions setting globals as deprecated
- Mark more parser functions as deprecated
- Mark most SAX1 functions as deprecated
- Deprecate some global variables

### Portability

- autoconf: Warn about outdated C compilers
- win32: Remove broken libxml2.def.src
- Remove symbols from version script
- catalog.c: Silence a cast warning on VS 2022 (Lukáš Tyrychtr)
- libxml.h: Remove ancient LynxOS setup
- Use python3 not python (Ross Burton)
- xstc/fixup-tests.py: port to Python 3 (Ross Burton)
- xstc/fixup-tests.py: unify whitespace (Ross Burton)
- Remove hacky heuristic from b2dc5675 (Alex Richardson)
- Avoid creating an out-of-bounds pointer by rewriting a check
  (Alex Richardson)
- Hide internal functions
- Correctly relocate internal pointers after realloc() (Alex Richardson)
- Visual Studio builds: Allow silencing deprecation warnings (Chun-wei Fan)
- Visual Studio: Define XML_DEPRECATED (Chun-wei Fan)
- xmllint: Include <io.h> on Windows
- warnings: Work around MSVC bug
- sources: Silence C4013 warnings on Visual Studio (Chun-wei Fan)
- python/setup.py.in: Improve Windows import patching (Chun-wei Fan)
- python: Create .pyd on Windows
- Fix Python build on Windows
- Fix Windows compiler warnings in python/types.c
- Fix libxml_PyFileGet
- Remove BeOS support
- Fix libxml_PyFileGet with stdout on macOS
- Migrate from PyEval_ to PyObject_
- Port build_glob.py to Python 3
- Port genChRanges.py to Python 3
- xmlexports.h: Remove LIBXML_FASTCALL optimization
- Remove XMLCALL and XMLCDECL macros from public headers
- Remove XMLDECL macro from .c files

### Build systems

- cmake: Link against `dl` and `dld` only when `LIBXML2_WITH_MODULES` is
  enabled (Alexander Kutelev)
- autotools: Fix make distcheck
- Remove RPM build, Makefile.tests, README.tests
- libxml.m4: deprecate AM_PATH_XML2, wrap PKG_CHECK_MODULES instead
  (Ross Burton)
- libxml.m4: fix -Wstrict-prototypes (Sam James)
- cmake: Build static library with -DLIBXML_STATIC
- autotools: Don't use version script on Windows
- autotools: Fix winsock detection
- autotools: Only add network libraries if HTTP/FTP enabled
- autotools: Disable parallel Python build
- python: Don't output missing generators during build
- build: Remove check for broken ss_family
- http: Simplify IPv6 checks
- autotools: Fix network checks on Windows
- Fix detection of GNU libiconv
- cmake: Fix Python installation
- cmake: Don't check for Python 2
- configure.ac: Also check for MSYS host
- Improve network library detection
- Detect ws2_32 with AC_SEARCH_LIBS
- Rework network configure checks
- Remove arg cast configure checks
- Fix dlopen check
- Remove HAVE_WIN32_THREADS configuration flag
- Rework dlopen and pthread detection
- Fix test in configure.ac
- cmake: Enable GCC compiler warnings
- Always link with -no-undefined
- Use AM_CFLAGS and AM_LDFLAGS consistently
- Remove -Wredundant-decls
- Call AC_CHECK_* with multiple arguments
- configure.ac: Remove checks for unused programs
- Rework library detection in configure.ac
- Rearrange configure.ac
- Consolidate zlib and lzma detection
- Remove "runtime debugging"
- Consolidate simple API modules in configure.ac
- Fix dependency resolution in configure.ac
- Fix --with-valid --without-regexps build
- Fix --with-schemas --without-xpath build
- Don't build unneeded .c source files
- Move xmlIsXHTML to tree.c
- Cleanup distribution settings in Makefile.am
- Also clean *.pyc files for Python 2
- Don't distribute libxml2.spec

### Tests

- testchar: Add test for memory pull parser with encoding
- fuzz: Also test init function of URI fuzzer
- fuzz: Separate fuzzer for DTD validation
- gitlab-ci: Enable all "integer" sanitizers
- fuzz: Inject random malloc failures
- fuzz: Support variable integer sizes in fuzz data
- fuzz: Fix duplicate detection in fuzzEntityRecorder
- fuzz: Set filename in xmlFuzzEntityLoader
- fuzz: Allow xmlFuzzReadString(NULL)
- fuzz: Fix Makefile dependencies
- fuzz: Add test/recurse to seed corpus
- fuzz: Add separate XInclude fuzzer
- runsuite: Some errors are expected
- testrecurse: Test entity expansion stats
- testapi.c: Initialize catalog early
- gentest.py: Fix memory leak in API tests
- tests: Enable "runsuite" test
- python/tests/reader2: use absolute paths everywhere (Ross Burton)
- python/tests/reader2: always exit(1) if a test fails (Ross Burton)
- testModule: exit if the module can't be opened (Ross Burton)
- CI: disable modules in gcc:static build (Ross Burton)
- CI: fix CI on MinGW builds (Ross Burton)
- python: Fix memory leak checks
- tests: Check that xmlInitParser doesn't allocate memory
- tests: Fix use-after-free in Python tests
- tests: Remove unneeded #includes
- gitlab-ci: Make Test-Msvc exit if ctest fails
- gitlab-ci: Treat compiler warnings as errors on MSVC
- test: Add test for push parser boundaries
- gitlab-ci: Upgrade image to Ubuntu 22.10, reenable MSan
- gitlab-ci: Reenable LeakSanitizer
- gitlab-ci: Fix llvm-symbolizer
- xinclude: Don't create result doc for test with errors
- xinclude: Also test error messages
- gitlab-ci: Allow cast-align warnings from clang
- gitlab-ci: Fix tar invocation
- gitlab-ci: Move MSVC test to separate script
- gitlab-ci: Fix SUFFIX, remove MINGW_PATH
- gitlab-ci: Consolidate CMake test scripts
- gitlab-ci: Only install MinGW autotools if needed
- gitlab-ci: Only install cmake MinGW package if needed
- gitlab-ci: Install 7-Zip using the .msi
- Use $MSYSTEM and 'bash -lc' in MinGW CI
- Add CI job for MinGW/Autotools
- Consolidate CI scripts
- Allow empty MINGW_PACKAGE_PREFIX
- Move Dockerfile to .gitlab-ci directory
- testapi: Disable on Windows for now
- Disable fuzzer tests if glob.h wasn't found
- Move automata test to runtest.c
- Fix testapi when building --without-sax1

# Documentation

- doc: Remove ancient files
- Remove ancient TODOs
- html: Fix htmlInitAutoClose documentation
- doc: Mention new location of XML catalog as breaking change
- doc: Mention potentially breaking changes in NEWS
- doc: Remove xmlDllMain from documentation and version script
- doc: Mention ${sysconfdir} in man pages
- doc: Document xmlcatalog --convert
- doc: Document xmllint --nodict and --pedantic
- doc: Fix indentation in source XML files
- xmllint: Document --quiet option
- Improve cross-references in API docs
- Improve documentation of globals
- Fix documentation parser
- Support comments for global variables in documentation
- Fix update call in apibuild.py
- Don't index anything in DOC_DISABLE sections
- Fix warnings from apibuild.py
- Start with documentation for maintainers

Log message:
py-libxml2: require fixed libxml2 version

Log message:
textproc/libxml2, textproc/py-libxml2: fix dependencies and PKGREVISION

Make sure the fixed build of libxml2 with the deprecated symbols is pulled
in.

Log message:
*: recursive bump for icu 74.1

Log message:
py-libxml2: Add explanation of incorrect header file processing

It remains to turn the explanation of what is going wrong into a fix,
awaiting comments and perhaps the branch.

The esssence of the problem is that at least on older macOS, there is
a native libxml2 with legacy enabled, not intended to be used by the
package, and a native iconv, which is intended to be used, and the
ordering of -I results in the native libxml2 headers being used.

Log message:
Mass-change BUILD_DEPENDS to TOOL_DEPENDS outside mk/.

Almost all uses, if not all of them, are wrong, according to the
semantics of BUILD_DEPENDS (packages built for target available for
use _by_ tools at build-time) and TOOL_DEPEPNDS (packages built for
host available for use _as_ tools at build-time).

No change to BUILD_DEPENDS as used correctly inside buildlink3.

As proposed on tech-pkg:
https://mail-index.netbsd.org/tech-pkg/2023/06/03/msg027632.html

Log message:
revbump after textproc/icu update