2013-04-22  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

	* configure.ac: Sync with GCC.
	* configure: Regenerated.
2013-04-22  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

	* Makefile.def: Sync with GCC.
	* Makefile.in: Regenerate.
	Port newlib to x86_64-pc-cygwin.
	* libc/include/sys/features.h: Redefine compilation environment
	definitions for Cygwin to cover 64 bit Cygwin.
	* libc/ctype/ctype_.c (_ctype_): Fix definition for 64 bit Cygwin.
	* libc/include/machine/setjmp.h: Change definition of _JBLEN to allow
	different values for 32 bit and 64 bit Cygwin.
	* libc/include/reent.h (stat64): Define as stat under Cygwin, instead
	of as __stat64.  Undef stat64 if not building Newlib.
	* libc/include/sys/stat.h (stat64): Define as stat under Cygwin.
	* Merge in cygwin-64bit-branch.
	* cygwin64.din (_setjmp): Export.
	(_longjmp): Export.
Merge branch 'cygwin' into msys2-1.0-dev