Log Message:
Update to 1.2.22. From the changelog:

API:

* Add FLAG_CJK_NGRAM for QueryParser and TermGenerator.  Has the same effect as
  setting the environment variable XAPIAN_CJK_NGRAM.  Fixes #180, reported by
  Richard Boulton, with contributions from Pavel Strashkin, Mikkel Kamstrup
  Erlandsen and Brandon Schaefer.

* Fix bug parsing multiple non-exclusive filter terms - previously this could
  result in such filters effectively being ignored.

* Fix Database::get_doclength_lower_bound() over multiple databases when some
  are empty or consist only of zero-length documents.  Previously this would
  report a lower bound of zero, now it reports the same lowest bound as a
  single database containing all the same documents.

* Make Database::get_wdf_upper_bound("") return 0.

* Mark constructors taking a single argument as "explicit" to avoid \ 
unwanted
  implicit conversions.

testsuite:

* If command line option --verbose/-v isn't specified, set the verbosity level
  from environmental variable VERBOSE.

* Skip timed tests if $AUTOMATED_TESTING is set.  Fixes #553, reported by
  Dagobert Michelsen.

* Don't leave an extra fd open when starting xapian-tcpsrv for remotetcp tests.

* apitest: Revert disabling of part of adddoc5 for clang - the test failure was
  in fact due to a bug in 1.3.x, and 1.2.x was never affected.

* apitest: Tweak bounds checks in dbstats1 testcase - multi backends should
  give tight bounds.

brass backend:

* Format limit on docid now correctly imposed when sizeof(int) > 4.

* Avoid potential DB corruption with full-compaction when using 64K blocks.

chert backend:

* Format limit on docid now correctly imposed when sizeof(int) > 4.

* Avoid potential DB corruption with full-compaction when using 64K blocks.

flint backend:

* Format limit on docid now correctly imposed when sizeof(int) > 4.

* Avoid potential DB corruption with full-compaction when using 64K blocks.

remote backend:

* Fix to handle total document length exceeding 34,359,738,368.  (Fixes #678,
  reported by matf).

* Avoid dividing by zero when getting the average length for an empty database.

* Stop apparent error from remote server when read-only client disconnects.  A
  read-only client just closes the connection when done, but the server
  previously reported "Got exception NetworkError: Received EOF", \ 
which sounds
  like there was a problem.  Now we just say "Connection closed" here, and
  "Connection closed unexpectedly" if the client connects in the \ 
middle of an
  exchange.  Possibly fixes #654, reported by German M. Bravo.

* Give a clearer error message when the client and server remote protocol
  versions aren't compatible.

* Check length of key in MSG_SETMETADATA.

build system:

* pkg-config: Fix library name in .pc file to say "xapian" not \ 
"xapian-core".
  Reported by Eric Lindblad to the xapian-devel list.

* Private symbol decode_length() is no longer visible outside the library.

documentation:

* Stop maintaining ChangeLog files.  They make merging patches harder, and stop
  'git cherry-pick' from working as it should.  The git repo history should be
  sufficient for complying with GPLv2 2(a).

* Strip out "quickstart" examples which are out of date and rather \ 
redundant
  with the "simple" examples.

* Correct documentation of Enquire::get_query().  If no query has been set,
  the documentation said Xapian::InvalidArgumentError was thrown, but in
  fact we just return a default initialised Query object (i.e. Query()).  This
  seems reasonable behaviour and has been the case since Xapian 0.9.0.

* Document xapian-compact --blocksize takes an argument.

* Update snowball website link to snowballstem.org.

tools:

* xapian-replicate: Fix replication for files > 4GB on 32-bit platforms.
  Previously replication would fail to copy a file whose size didn't fit in
  size_t.  Fixes #685, reported by Josh Elsasser.

* xapian-tcpsrv: Better error if -p/--port not specified

* quest: Support `-f cjk_ngram`.

examples:

* xapian-metadata: Extend "list" subcommand to take optional key prefix.

portability:

* Fix new warnings from recent versions of GCC and clang.

* Add spaces between literal strings and macros which expand to literal strings
  for C++11 compatibility in __WIN32__-specific code.

* Need <unistd.h> for unlink() on FreeBSD, reported by Germán M. Bravo via
  github PR 72.

* Fix testsuite to build when S_ISSOCK() isn't defined.

* Don't provide our own implementation of sleep() under __WIN32__ if there
  already is one - mingw provides one, and in some situations it seems to clash
  with ours.  Reported to xapian-discuss by John Alveris.

* Add missing '#include <arpa/inet.h>' to htons().  Seems to be implicitly
  included on most platforms, but Interix needs it.  Reported by Eric Lindblad
  on xapian-discuss.

* Disable "<FUNCTION> is expected to return a value" warning \ 
from Sun's C++
  compiler, as it fires for functions ending in a "throw" statement.  \ 
Genuine
  instances will be caught by compilers with superior warning machinery.

* Prefer scalbn() to ldexp() where possible, since the former doesn't ever set
  errno.

* '#include <config.h>' in the "simple" examples, as when \ 
compiling with xlC on
  AIX, _LARGE_FILES gets defined by AC_SYS_LARGEFILE to enable large file
  support, and defining this changes the ABI of std::string, so it also needs
  to be defined when compiling code using Xapian.

* On cygwin, include <arpa/inet.h> instead of winsock headers for htons() and
  htonl().

* Include <cygwin/version.h> for CYGWIN_VERSION_API_MAJOR.

* Avoid referencing static members via an object in that object's own
  definition, as this doesn't work with all compilers (noted with GCC 3.3), and
  is a bit of an odd construct anyway.  Reported by Eric Lindblad on
  xapian-discuss.

* GCC < 3.4.2 lacks operator<< overloads for unsigned long long on some
  platforms, so simply work around this by using str(), as this isn't
  performance sensitive code.  Reported by Eric Lindblad on xapian-discuss.

* Fix delete which should be delete[] in brass backend cursor code.