* include/cygwin/version.h (CYGWIN_VERSION_DLL_MINOR): Bump to 23.
src-release: Fix VER computation for TOOL=gdb

Without this patch, the DATE marker in gdb/version.in does not get
replaced by the source packaging date, causing the name of the
tarball being created to: have the DATE marker in the tarball
name and the name of the directory the sources unpack to (Eg:
gdb-7.6.50-DATE-cvs.tar instead of gdb-7.6.50-20130710-cvs.tar).

ChangeLog:

        * src-release (VER): Use $(TOOL)/common/create-version.sh
        if it exists.
	* libc/sys/linux/include/netdb.h, libc/sys/linux/net/getaddrinfo.c,
	libc/sys/linux/net/getnameinfo.c: Add restrict keyword to getnameinfo()
	and getaddrinfo() to increase standards compliance and match glibc.

	* libc/include/string.h, libc/string/memccpy.c, libc/string/memcpy.c,
	libc/string/stpcpy.c, libc/string/stpncpy.c, libc/string/strcat.c,
	libc/string/strncat.c, libc/string/strncpy.c, libc/string/strtok.c,
	libc/string/strtok_r.c, libc/string/strxfrm.c
	libc/machine/microblaze/strcpy.c, libc/machine/xscale/memcpy.c,
	libc/machine/cris/memcpy.c: Add __restrict to prototype to
	increase standards compliance.
	* cygtls.cc (well_known_dlls): Add kernelbase.dll.
	* ntdll.h (struct _SEMAPHORE_BASIC_INFORMATION): Define.
	(enum _SEMAPHORE_INFORMATION_CLASS): Define.
	(NtQuerySemaphore): Declare.
	* thread.h (class semaphore): Add member startvalue.
	(semaphore::fixup_before_fork): New inline method.
	(semaphore::_fixup_before_fork): Declare.
	* thread.cc (MTinterface::fixup_before_fork): Additionally call
	semaphore::fixup_before_fork.
	(semaphore::semaphore): Set currentvalue to -1.  Set startvalue to
	incoming initializer value.
	(semaphore::_getvalue): Just query semaphore using NtQuerySemaphore
	rather then using WFSO/Release.
	(semaphore::_post): Drop setting currentvalue.  It's not thread-safe.
	(semaphore::_trywait): Ditto.
	(semaphore::_timedwait): Ditto.
	(semaphore::_wait): Ditto.
	(semaphore::_fixup_before_fork): New method, setting currentvalue from
	actual windows semaphore right before fork.
	(semaphore::_fixup_after_fork): Drop kludge from 2013-07-10.  Drop
	FIXME comment.