Add prototypes for new msvcrt.dll versions

	Add prototypes for new msvcrt.dll versions

	* include/_mingw.h (__MSVCRT_VERSION__): Define default as 0x0600.

	* include/time.h (__time64_t): Add typedef.
	(_mktime64): Add prototype for __MSVCRT_VERSION__ >= 0x0601.
	(_ctime64): Likewise.
	(_wctime64): Likewise.
	(_gmtime64): Likewise.
	(_localtime64): Likewise.
	(wcsftime): Move into _WTIME_DEFINED block.
	Regroup non-ANSI prototypes.

	* include/io.h: Include <stdint.h>.
	(__finddata64_t): Add struct definition.
	(__wfinddata64_t): Likewise.
	(_findfirst64): Add prototype for __MSVCRT_VERSION__ >= 0x0601.
	(_findnext64): Likewise.
	(_wfindfirst64): Likewise.
	(_wfindnext64): Likewise.

	* include/sys/timeb.h (__timeb64): Add struct definition.
	(_ftime64): Add prototype for __MSVCRT_VERSION__ >= 0x0601.

	* include/sys/utime.h (__utimbuf64): Add struct definition.
	(_utime64): Add prototype for __MSVCRT_VERSION__ >= 0x0601.
	(_futime64): Likewise.
	(_wutime64): Likewise.

	* include/sys/stat.h (__stat64):  Add struct definition.
	(_fstat64): Add prototype for __MSVCRT_VERSION__ >= 0x0601.
	(_stat64): Likewise.
	(_wstat64): Likwise.

	* include/sys/types.h (__time64_t):  Add typedef.

	* include/wchar.h (__wfinddata64_t): Add structure definition.
	(__stat64): Likewise.
	(_wctime64): Add prototype for __MSVCRT_VERSION__ >= 0x0601.
	(_wfindfirst64): Likewise.
	(_wfindnext64): Likewise.
	(_wutime64): Likewise.
	(_wstat64): Likwise.

	* include/malloc.h (_aligned_free): Add prototype for
	__MSVCRT_VERSION__ >= 0x0700.
	(_aligned_malloc): Likewise.
	(_aligned_offset_malloc): Likewise.
	(_aligned_offset_realloc): Likewise.
	(_aligned_realloc): Likewise.

	* include/string.h (_wcserror): Add prototype for
	__MSVCRT_VERSION__ >= 0x0700.
	(__wcserror): Likewise.

	* include/math.h (_set_SSE2_enable): Add prototype for
	__MSVCRT_VERSION__ >= 0x0701.