- Update gauche to 0.9.2. See below for the list of changes.

- Replace the HOMEPAGE with the url used in the document
  such as README etc.
- Drop minoura@ from MAINTAINER as per his request on twitter.


Brief summary of Gauche 0.9.2:

 [New Features]
     * Case mapping and character properties are fully supported,
       compatible to R6RS and R7RS draft (both based on Unicode
       standard).  Character-wise case mapping (char-upcase etc.) and
       property queries (char-alphabetic?, char-general-category,
       etc.) are built-in.  Context-aware string case mapping
       (string-upcase etc.) is provided in the new text.unicode
       module. (Note: srfi-13's string-upcase etc.  are unchanged;
       they are defined to use simple case mappings.) The text.unicode
       module also provides conversion between utf-8/utf-16 and
       Unicode codepoints.
     * Windows binary distribution is now in MS installer (*.msi)
       format, created with WiX. It's safer than the previous *.exe
       format created by NSIS, which had a bug that smashes PATH
       settings when it is too long.
     * A convenient wrapper for atomic execution is added in
       gauche.threads. See this intro post.
     * Benchmarking utilities resembles to Perl's Benchmark module is
       now available in gauche.time. See this post for an
       introduction.
     * with-lock-file: A long-awaited feature to use lock files
       conveniently. It is in file.util module.
     * Added full support of srfi-60, integer bitwise operations.
     * gauche.cgen: Some API that Gauche uses to generate C code
       become public. See the manual for the details.
 [Incompatibile Changes]
     * control.thread-pool: add-job! now takes timeout argument. If it
       is omitted and the job queue is full, add-job! blocks. It is a
       change from 0.9.1, in which add-job! returns immediately in
       such case. To get the same behavior, pass 0 explicitly to the
       timeout argument.  The argument order of wait-all is also
       changed to take timeout optional argument first. In 0.9.1 it
       never timeouts.
     * If --enable-multibyte flag is given to ./configure without
       explicit encoding, we now assume utf-8. It used to be
       euc-jp. This is for the consistency. We don't think this change
       affects many, for the document has always been told to give
       explicit encoding name for this option.
     * The --enable-ipv6 configure option is turned on by default. It
       shouldn't cause problems on modern OSes. If you ever get a compile
       error in gauche.net module on a platform that lacks modern API,
       specify --disable-ipv6 option to ./configure.
     * (This is an internal change of undocumented feature. We mention
       it just in case if some extension packages depend on this.) In
       the initialization code generated by genstub or precomp, it
       used to be possible to refer to the current module by mod. Now
       you should use Scm_CurrentModule() instead. Also,
       gauche.cgen.unit now doesn't include <gauche.h> automatically.
 [Improvements]
     * The compiler is improved to avoid creating a closure at
       execution time when it doesn't close local environment. For
       example, (map (^x (* x x)) lis) doesn't create a closure;
       instead, the internal lambda is compiled as if it is a
       toplevel-defined procedure. (Yeah, it's a simple lambda
       lifting. We didn't do it since it could slow down the
       compiler. Now the compiler is efficient enough to handle it.)
     * Supports zero or multi-argument unquote/unquote-splicing, as
       defined in R6RS.
     * sys-exec and sys-fork-and-exec now supports :detached keyword
       argument to make the child process detached from the parent's
       process group.
     * Buliltin reverse and reverse! takes optional list-tail
       argument.
     * A new builtin procedure map* that can deal with dotted list.
     * Common Lisp-like ecase macro is added.
     * The extended lambda formals (:key, :optional, etc) are now
       available in define-method as well.
     * New built-in function sys-clearenv, useful to fork subprocess
       securely.
     * rxmatch-case accepts (else => proc) form, just like case.
     * Socket address objects (e.g. <sockaddr-un>) can now be compared
       by equal? based on its content. Useful to put them in a
       hashtable, for example.
     * gauche.uvector: A new procedure uvector-copy! that can copy any
       type of uvectors.
     * gauche.test: A new test expected result constructor test-one-of
       allows to check if the test result matches any one of possible
       outcomes.
     * control.thread-pool: Now a pool raises <thread-pool-shut-down>
       condition if the pool has already be shut down and no longer
       accepting new jobs. terminate-all now takes :cancel-queued-jobs
       keyword argument to stop the pool immediately, instead of
       waiting for all the jobs to be finished. Canceled jobs are
       marked as killed . New APIs: thread-pool-results,
       thread-pool-shut-down?.
     * rfc.json: Allow construct-json to take optional output port for
       the consistency.
     * rfc.uri: A new procedure uri-merge that can be resolve a
       relative uri in regart to a base uri.
     * rfc.cookie: Recognize :http-only cookie attribute introduced in
       RFC6265.
     * Now the tilde `~' expansion of sys-normalize-pathname works on
       Windows as well to refer to the current user's home directory;
       it tries environment variables heuristically to find it. To
       refer to other user's home directory by ~user is still only
       available on Unix platforms, though.
     * util.combinations: combinations is optimized to handle leaf
       cases efficiently.
 [Bux fixes]
     * Fixed a bug that the number parser hangs when reading
       2.2250738585072012e-308.
     * Integer multiplication routine had a code that depended on
       undefined behavior of C; it worked on gcc but revealed the bug
       on clang-llvm.
     * Fixed a module bug on the visibility of bindings of extended
       modules.
     * gauche.parameter: Fixed a couple of bugs on parameter objects.
     * Numeric comparison procedures such as < didn't work correctly
       when more than four arguments were given. The bug was
       introduced by incorrect optimization.
     * Fixed bugs in lognot, logand, logior and logxor, which crashed
       when non-integer ratinoal numbers are passed.
     * port->string, port->string-list: These procedures returned
       prematurely when the input contains an illegal byte sequence
       for internal encoding. Now they return an incomplete string
       instead.
     * srfi-1: Some srfi-1 procedures that are built-in were not
       exported, causing errors when you wanted to import them
       selectively, e.g.  (use srfi-1 :only (fold)).
     * util.queue: Fixed list->queue to work.
     * binary.pack: Fixed a bug that the result may be truncated if
       the input contains byte sequences that can be interpreted as
       invalid character multibyte sequences.
     * srfi-42: Fixed a hygiene bug; the previous versions failed when
       only toplevel macros are imported using :only import option.
     * rfc.json: Fixed a bug that didn't escape double-quotes in the
       string, and didn't handle empty array.
     * Coding-aware ports didn't count lines correctly in CR-only or
       CRLF line endings.
     * Fixed a problem that caused crash after changing metaclasses of
       a class metaobject. An additional protection mechanism is in
       place in the class metaobject so that it won't be in an
       inconsistent state unexpectedly.
     * Fixed sys-setenv in which you couldn't omit the overwrite
       argument, even if it was described optional.
     * Fixed build problem of gauche.net on Solaris.
     * Fixed a bug in gauche-package that caused an error when
       *load-path* contained a nonexistent path.
     * Fixed a bug in string comparison routine that surfaces in a
       special architecture.
     * The printed output of <time> was incorrect when its value was
       negative.
     * There was a bug in the reader it reads ().() incorrectly.
     * Fixed a bug in format to allow ~* to position after the last
       argument.
     * Fixed GC compliation problem on OSX Lion.

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