* libc/include/stdint.h (INT32_MIN, INT32_MAX, UINT32_MAX,
INT_LEAST32_MIN, INT_LEAST32_MAX, UINT_LEAST32_MAX): Define to
constants with "long" types where appropriate.
(INT_FAST8_MIN, INT_FAST8_MAX, UINT_FAST8_MAX, INT_FAST16_MIN,
INT_FAST16_MAX, UINT_FAST16_MAX, INT_FAST32_MIN, INT_FAST32_MAX,
UINT_FAST32_MAX, INT_FAST64_MIN, INT_FAST64_MAX, UINT_FAST64_MAX):
Correct to match logic for defining corresponding types.
(INTMAX_MAX, INTMAX_MIN, UINTMAX_MAX): Define.
(SIZE_MAX): Define using __SIZE_MAX__ if available.
(PTRDIFF_MAX): Define using __PTRDIFF_MAX__ if available.
(PTRDIFF_MIN): Define in terms of PTRDIFF_MAX.
(WCHAR_MAX, WCHAR_MIN, WINT_MAX, WINT_MIN): Define.
(UINT8_C, UINT16_C): Define to give signed values if corresponding
types would promote to int.
* libc/include/stdint.h: Prefer long over int for int32_t.
Use __have_long32 to set up int32_t.
* libc/include/inttypes.h: Use "#if xxx" instead of "#ifdef xxx"
(Sync with stdint.h).
* libc/include/stdint.h (__EXP): Rename to __STDINT_EXP
and do not #undef the macro after it is used. Fix typos.
Also change 64-bit constants to use the __have_long64 and
__have_longlong64 flags to determine if long or long long
constants should be used.
* libc/include/inttypes.h: Include stddef.h to get wchar_t
type defined.