* libc/include/_ansi.h: _LONG_LONG_TYPE definition removed.
	* libc/include/math.h: _LONG_LONG_TYPE replaced by "long long".
	Guards for C99 and C++11 functions fixed.
	* libc/include/stdlib.h: Guards for C99 and C++11 functions fixed.
	* dlfcn.cc (dlopen): Disable old 32 bit code on 64 bit.
	* dcrt0.cc (check_sanity_and_sync): Ditto.
	* dll_init.cc (dll_dllcrt0_1): Fix typo in comment.
Merge branch 'Cygwin' into develop

Conflicts:
	winsup/cygwin/dcrt0.cc