Log message:
Update to Racket 6.4

Changes in Racket 6.4:

- We fixed a security vulnerability in the web server.  The existing
  web server is vulnerable to a navigation attack if it is also
  enabled to serve files statically; that is, any file readable by
  the web server is accessible remotely. For more information see

http://blog.racket-lang.org/2016/02/racket-web-server-security-vulnerability.html

- DrRacket's scrolling is faster.

- Incremental garbage-collection mode can eliminate long pauses in a
  program. For example, incremental mode is useful for avoiding pauses
  in games and animations.

  Programs must specifically request incremental mode with
  `(collect-garbage 'incremental)`, but libraries such as
  `2htdp/universe` include the request as part of the library's
  implementation.

- The default package catalog is an HTTPS address instead of HTTP, and
  package operations properly validate server certificates when using
  HTTPS.

- Documentation may define their own categories for the manual top-
  level page by using strings, rather than only symbols that name
  pre-defined categories.

- The Racket cheat sheet is included in the main distribution.

- DrRacket is available in Bulgarian, thanks to Alexander Shopov.

- The contract Typed Racket generates for the `Any` type is more
  permissive, allowing more typed/untyped programs to work without
  contract errors.

- Redex supports binding specifications; describe which variables bind
  in which expressions and your metafunctions and reduction relations
  automatically become scope-sensitive. Thanks to Paul Stansifer for
  this improvement.

- All `pict` functions accept `pict-convertible`s. This allows for
  transparent interoperability between `pict` and  libraries like
  `2htdp/image`.

- The `raco profile` and `raco contract-profile` commands provide easy
  access to profiling tools, without requiring program modifications.

Log message:
pkglint

Log message:
Update to Racket 6.3

Changes in Racket 6.3

- Racket's macro expander uses a new representation of binding called
  "set of scopes". The new binding model provides a simpler
  explanation of how macros preserve binding, especially across module
  boundaries and in hygiene-bending expansions. The new expander is
  mostly compatible with existing Racket macros, but there are some
  incompatibilities. For the formally inclined, a research paper on
  this macro system will appear at POPL next year:

      http://www.cs.utah.edu/plt/scope-sets/

- Racket's GUI library now uses Gtk+ 3 when available, instead of Gtk+ 2.
  Set the `PLT_GTK2` environment variable to select Gtk+ 2.

- Added a new Redex tutorial based on a week-long workshop in SLC.

- Better syntax error checking for Redex patterns that do not use
  holes correctly.

- The blueboxes are more agressive about finding names to look up in
  the docs, meaning they are useful much more often.

- Submodules are now fully supported in Typed Racket. Previously, some
  uses of submodules would produce internal errors, making it hard to
  `module+ test` and `module+ main` effectively in Typed Racket. The
  switch to the set-of-scopes expander fixed these problems, and
  submodules are now happily at home in Typed Racket.

- The `typed/racket/unsafe` library provides import and export forms
  that circumvent contract generation. This improves performance for
  typed-untyped interaction at the cost of safety and debuggability.

- Typed Racket provides experimental support for units (from
  `racket/unit`).

- The experimental `define-new-subtype` form allows overlaying finer
  distinctions between otherwise identical types, similar to Haskell's
  `newtype`.

- The `Promise` type constructor changes in a backwards-incompatible
  way to exclude promises created with `promise/name`.

- The `unstable-*` packages are out of the main distribution. Most of
  their contents have been either merged with established Racket
  libraries or spun off as their own packages. This change is
  backwards compatible for packages that properly list their
  dependencies. Full details:
  http://blog.racket-lang.org/2015/10/retiring-unstable.html

- edu: `big-bang` supports a display-mode clause so that world
  programs can take over the entire screen.

Changes in Racket 6.2.1

- For the How to Design Programs teaching languages, DrRacket offers
  an option to use the old style for printing the constants `true`,
  `false`, and `empty` instead of `#true`, `#false`, and `'()`.

- The teaching languages come with some additional functions to match
  the August 2015 stable release of HtDP 2nd edition.

- A repair to the compiler avoids an infinite loop at compile time for
  certain expressions that should loop forever at run time.

Log message:
Add SHA512 digests for distfiles for lang category

Problems found with existing digests:
	Package nhc98 distfile nhc98src-1.22.tar.gz
	a8adc8f22371998ee0657bc0e01058a57d876abc [recorded]
	81975fcb5f1dda5efeaabc30ce8c6dceae55e591 [calculated]

Problems found locating distfiles:
	Package gcc-aux: missing distfile ada-bootstrap.i386.dragonfly.36A.tar.bz2
	Package gcc-aux: missing distfile ada-bootstrap.i386.freebsd.84.tar.bz2
	Package gcc-aux: missing distfile ada-bootstrap.x86_64.dragonfly.36A.tar.bz2
	Package gcc-aux: missing distfile ada-bootstrap.x86_64.freebsd.84.tar.bz2
	Package gcc-aux: missing distfile ada-bootstrap.x86_64.solaris.511.tar.bz2
	Package gcc5-aux: missing distfile ada-bootstrap.i386.dragonfly.36A.tar.bz2
	Package gcc5-aux: missing distfile ada-bootstrap.i386.freebsd.84.tar.bz2
	Package gcc5-aux: missing distfile ada-bootstrap.x86_64.dragonfly.36A.tar.bz2
	Package gcc5-aux: missing distfile ada-bootstrap.x86_64.freebsd.84.tar.bz2
	Package gcc5-aux: missing distfile ada-bootstrap.x86_64.solaris.511.tar.bz2
	Package ghc7: missing distfile ghc-7.6.3-boot-i386-unknown-freebsd.tar.xz
	Package icc11: missing distfile l_cproc_p_11.1.080.tgz
	Package jini: missing distfile jini-1_2_1_001-src.zip
	Package oo2c: missing distfile oo2c_32-2.0.11.tar.bz2
	Package openjdk7: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-freebsd-10-amd64-20150301.tar.xz
	Package openjdk7: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-netbsd-5-i386-20150301.tar.xz
	Package openjdk7: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-netbsd-6-i386-20150301.tar.xz
	Package openjdk7: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-netbsd-7-earmv6hf-20150306.tar.xz
	Package openjdk7: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-netbsd-7-sparc64-20150301.tar.xz
	Package openjdk7: missing distfile \ 
openjdk7/bootstrap-jdk7u60-bin-dragonfly-3.8-amd64-20140719.tar.bz2
	Package openjdk8: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-freebsd-10-amd64-20150301.tar.xz
	Package openjdk8: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-netbsd-5-i386-20150301.tar.xz
	Package openjdk8: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-netbsd-6-i386-20150301.tar.xz
	Package openjdk8: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-netbsd-7-earmv6hf-20150306.tar.xz
	Package openjdk8: missing distfile \ 
openjdk7/bootstrap-jdk-1.7.76-netbsd-7-sparc64-20150301.tar.xz
	Package openjdk8: missing distfile \ 
openjdk7/bootstrap-jdk7u60-bin-dragonfly-3.8-amd64-20140719.tar.bz2
	Package oracle-jdk8: missing distfile jdk-8u60-linux-i586.tar.gz
	Package oracle-jdk8: missing distfile jdk-8u60-solaris-x64.tar.gz
	Package oracle-jre8: missing distfile jre-8u60-linux-i586.tar.gz
	Package oracle-jre8: missing distfile jre-8u60-solaris-x64.tar.gz
	Package sun-jdk6: missing distfile jdk-6u45-linux-i586.bin
	Package sun-jdk6: missing distfile jdk-6u45-solaris-i586.sh
	Package sun-jdk7: missing distfile jdk-7u72-linux-i586.tar.gz
	Package sun-jdk7: missing distfile jdk-7u72-solaris-i586.tar.gz
	Package sun-jre6: missing distfile jce_policy-6.zip
	Package sun-jre6: missing distfile jre-6u45-linux-x64.bin
	Package sun-jre6: missing distfile jre-6u45-solaris-x64.sh
	Package sun-jre7: missing distfile jre-7u72-linux-i586.tar.gz
	Package sun-jre7: missing distfile jre-7u72-solaris-i586.tar.gz

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.

Log message:
Update to Racket 6.1.1

Changes:

* The MAC OS X YOSEMITE compatibility problems are fixed. We
  bundled a patched Pango text-drawing library with Racket.

* The WINDOWS [32-bit] releases fixes the window-update crashes.
  We bundled a patched Cairo drawing library with Racket.

* TYPED RACKET closes two safety holes in the exception system.
  The revised type system restricts `raise' to send only
  instances of the `exn' structure type and flat data to
  handlers. It also checks exception handlers properly.
  NOTE: Previously well-typed programs may fail to typecheck.

* TYPED RACKET'S typed regions support casts and predicates.

* 2HTDP/IMAGE'S notion of equality ignores an image's baseline.

* The PACKAGE MANAGER supports a binary library installation mode,
  which allows users to install packages without source or
  documentation.  Use the `--binary-lib' option with `raco pkg
  install'.

* The new DRRACKET-TOOL-LIB package factors out parts of DrRacket's
  IDE so that they can be reused with other editors, such as Emacs.

* The COMPILER'S use-before-defined analysis has been repaired for
  certain forms of nested `letrec', some `let' forms, and some
  uses of `set!' or `with-continuation-mark'.

* The COMPILER performs additional bytecode optimizations.
  Thanks to Gustavo Massaccesi.

* The CML library comes with a new `replace-evt' event constructor.
  Thanks to Jan Dvorak.

* REDEX'S benchmark suite comes with a description of the benchmark
  programs.

* REDEX'S metafunctions can be typeset using the "large left brace"
  notation for conditionals.

* The CONTRACT library comes with an improved `contract-stronger?'.
  Its error messages note that the contract itself might be wrong.

* The GUI library is DPI-aware on Windows.

* The OPENSSL library supports Server Name Indication for servers.
  Thanks to Jay Kominek.

* The SYNTAX/PARSE library allows the definition of new pattern
  forms via pattern expanders, similar to match expanders.
  Thanks to Alex Knauth.

* OpenGL on Linux no longer depends on libgtkgl, and core profiles
  are supported (see `set-legacy?').

* The TEACHING LANGUAGES' unit test framework supports
  `check-satisfied', a construct for checking whether a result
  satisfies a predicate, e.g.: (check-satisfied (sort l) sorted?)

Log message:
Update of racket ports to version 6.1.1. Coordinated with asau. Changes,
as per upstream changelog:
- Bug repairs and other changes noted in the documentation
- Changed use-before-definition to be an error instead of producing
 an #<undefined> value
- Removed the mzlib/class100 library

Also changed the racket port to use mk/jpeg.buildlink3.mk.

Log message:
Replace files with three level depths.

Log message:
Update to Racket 6.0.1

Changes in version 6.0.1

* A new `racket/undefined` library exports `undefined` as the
  value currently produced by

    (letrec ([x x]) x)

  This library anticipates a future where that expression will
  raise an exception. The `racket/undefined` library will continue
  to offer the `undefined` value as a bridge between versions and
  as a last resort.

* The drawing and GUI libraries provide improved support for
  high-resolution bitmaps and their use on Retina displays. For
  example, `read-bitmap` includes a `#:try-@2x?` option to trigger
  substitutions through the usual "@2x" naming convention.

* Check Syntax cooperates with Typed Racket to show arrows and other
  Check Syntax highlighting even when there is a type error.

* Functions provided via contract-out that have first-order
  contracts perform better.

* The contract boundary between typed/untyped modules is much less
  expensive. Typed Racket now avoids generating contracts for
  places where contracts failures cannot happen.

* Occurrence typing now works better with when/unless. Example:

    (let ((x (read)))
      (unless (number? x) (error 'bad-input))
      (add1 x))

* Types in Typed Racket are now pretty-printed.

* Function types can now be written in prefix style, which is now
  preferred and is used for printing. Infix function types are still
  accepted for backwards compatibility.

* A new `->*' type constructor is used for writing types for
  functions with optional and keyword arguments. The notation is
  similar to the matching contract combinator.

* Typed Racket forms do not have a `:' suffix by default now. For
  example, the `struct' form replaces `struct:'. The suffixed
  versions are all provided for backwards compatibility.

* Typed Racket now has preliminary support for classes and
  objects. However, it is still experimental and the APIs are
  subject to change.

* Type aliases in Typed Racket now support recursion and mutual
  recursion. For example, `(define-type (MyList X) (U Null (Pair X
  (MyList X))))' is now a valid type alias.

* Plot correctly renders intersecting 3D graphs and
  non-grid-aligned 3D rectangles.

* Elements in plots output in PDF/PS format have the same relative
  scale as in other formats. In particular, it is not necessary to
  adjust `plot-font-size` to make PDF plots look the same as PNG.

Changes in version 6.0

Racket 6.0 has a new package system, including a catalog of
hundreds of already-available packages. Please visit

   http://pkgs.racket-lang.org/

for an overview of the packages.

Racket versions 5.3.4 through 5.3.6 included "beta" versions of the
package system. Racket version 6.0 incorporates many improvements
suggested by preliminary experiences in those versions:

  * A package is treated as a single collection by default, so it is
    even easier to use a GitHub repository as a package. Get started
    quickly:
      http://docs.racket-lang.org/pkg/getting-started.html

  * DrRacket includes a new package manager GUI, available via the
    File|Package Manager ... menu item. The GUI is also available
    as a stand-alone program via the "gui-pkg-manager" package.

  * The main Racket distribution has been separated into about 200
    packages. The Racket installer combines the core system with
    bundled versions of these packages.

    Alternatively, you may now install a Minimal Racket distribution
    --- which is about 1/10 the size of the main distribution --- and
    add only those packages that you need.

  * Package installation supports pre-built packages that include
    compiled byte code and rendered documentation, meaning packages can
    be installed quickly when built versions are available. All
    packages in the main distribution are available in pre-built form.

The recent 5.92 and 5.93 releases served as release candidates for 6.0,
and 6.0 includes a few additional repairs related to the package
system.

Further improvements to the package system are in the works, notably
including package documentation on the package-catalog web site.

COMPATIBILITY NOTE: PLaneT, the previous Racket package system, will
remain in place for the foreseeable future, but we expect all package
work to shift to the new system.

Beyond the package system, this release brings a number of other
changes:

  * Racket's HTML documentation has a new and improved look, thanks to
    Matthew Butterick.

  * The documentation includes a style guide, "How to Program Racket"
    http://docs.racket-lang.org/style/

  * Racket's JIT compiler supports the ARM architecture.

  * Racket supports the Mac's Retina display mode.

  * The performance of the Typed Racket compiler improved by 50% on
    some typed programs.

  * The profiler provides a new mode that uses the errortrace library
    to produce fine-grained profiles.

  * A new contract profiler reports how much time programs spend
    checking contracts, and which contracts are most expensive.

  * The math/flonum library exports fast 105-bit precision operations.

  * Check Syntax handles generated identifiers, especially those
    introduced by struct (e.g. field selectors) and Redex (e.g., e_1,
    e_2)

  * 2htdp/batch-io includes functions for dealing with html/xml in
    files and web sites as X-expressions plus conveniences for
    web-based graph traversals.

  * The `gen:set' generic interface extends set operations to work on
    user-defined types that implement set methods, as well as on other
    set-like built-in types, such as lists.

  * Picts support conversion to SVG format.

  * Under unix, Racket provides desktop entries (.desktop files) for
    its graphical executables.

Log message:
Update to Racket 5.3.6

Racket 5.3.6

This is a bug-fix release.  It eliminates errors from v5.3.5 that
people have found over the summer.

Racket 5.3.5

This is a special-purpose release to match the arrival of "Realm of
Racket" in bookstores.  Racket v.5.3.5 adds a single `realm'
collection to the v5.3.4 release.  The new collection contains the
source code that readers of Realm may wish to use for experiments.

Racket 5.3.4

* Extflonums (80-bit floating-point numbers) are supported on some
  x86/x86_64 platforms -- including Windows, and including platforms
  where Racket is compiled to use SSE instructions for flonum
  arithmetic.  Thanks to Michael Filonenko.

* OS X: DrRacket and all of the other apps are now signed with an
  official key.

* Tally Maze: a new game based an enumeration of 2d mazes.

* The Optimization Coach, a DrRacket plugin, has been moved from the
  Racket distribution to the Racket package repository.  Install it
  with: raco pkg install optimization-coach

* Redex: `define-union-language' now merges productions when
  languages define the same nonterminals.  Thanks to William Bowman.

* The `srfi/19' library is now compatible with the date structure
  type exported by `racket/base'.

Log message:
Various MASTER_SITES-related fixes.