Always define the 64-bit int types.

These preprocessor tricks have caused trouble for -std=gnu99 and -ansi, and
both netbsd's libc and glibc seem to unconditionally define these types.

Change-Id: Ib8dffa341a8ca88f80d275ba2b7f93a4c910ee32
diff --git a/libc/include/stdint.h b/libc/include/stdint.h
index e791475..49879cb 100644
--- a/libc/include/stdint.h
+++ b/libc/include/stdint.h
@@ -31,8 +31,6 @@
 #include <stddef.h>
 #include <sys/_types.h>
 
-
-
 #if !defined(__cplusplus) || defined(__STDC_LIMIT_MACROS)
 #  define __STDINT_LIMITS
 #endif
@@ -41,20 +39,14 @@
 #  define  __STDINT_MACROS
 #endif
 
-#if !defined __STRICT_ANSI__ || __STDC_VERSION__ >= 199901L
-#  define __STDC_INT64__
-#endif
-
 typedef __int8_t      int8_t;
 typedef __uint8_t     uint8_t;
 typedef __int16_t     int16_t;
 typedef __uint16_t    uint16_t;
 typedef __int32_t     int32_t;
 typedef __uint32_t    uint32_t;
-#if defined(__STDC_INT64__)
 typedef __int64_t     int64_t;
 typedef __uint64_t    uint64_t;
-#endif
 
 /*
  * int8_t & uint8_t
@@ -93,7 +85,6 @@
  * int16_t & uint16_t
  */
 
-
 typedef int16_t       int_least16_t;
 typedef int32_t       int_fast16_t;
 
@@ -156,17 +147,16 @@
 #  define UINT_FAST32_C(c) UINT32_C(c)
 #endif
 
-#if defined(__STDC_INT64__)
 /*
  *  int64_t
  */
+
 typedef int64_t       int_least64_t;
 typedef int64_t       int_fast64_t;
 
 typedef uint64_t      uint_least64_t;
 typedef uint64_t      uint_fast64_t;
 
-
 #ifdef __STDINT_LIMITS
 #  define INT64_MIN        (__INT64_C(-9223372036854775807)-1)
 #  define INT64_MAX        (__INT64_C(9223372036854775807))
@@ -193,13 +183,10 @@
 #  define UINT_FAST64_C(c)  UINT64_C(c)
 #endif
 
-
 #  define __PRI64_RANK   "ll"
 #  define __PRIFAST_RANK ""
 #  define __PRIPTR_RANK  ""
 
-#endif /* __STDC_INT64__ */
-
 /*
  * intptr_t & uintptr_t
  */
@@ -221,14 +208,10 @@
 #  define PTRDIFF_C(c)  INT32_C(c)
 #endif
 
-
-
 /*
  *  intmax_t & uintmax_t
  */
 
-#if defined(__STDC_INT64__)
-
 typedef uint64_t uintmax_t;
 typedef int64_t  intmax_t;
 
@@ -243,25 +226,6 @@
 #  define UINTMAX_C(c)	UINT64_C(c)
 #endif
 
-#else /* !__STDC_INT64__ */
-
-typedef uint32_t  uintmax_t;
-typedef int32_t   intmax_t;
-
-#ifdef __STDINT_LIMITS
-#  define  INTMAX_MIN    INT32_MIN
-#  define  INTMAX_MAX    INT32_MAX
-#  define  UINTMAX_MAX   UINT32_MAX
-#endif
-
-#ifdef __STDINT_MACROS
-#  define INTMAX_C(c)	INT32_C(c)
-#  define UINTMAX_C(c)	UINT32_C(c)
-#endif
-
-#endif /* !__STDC_INT64__ */
-
-
 /* size_t is defined by the GCC-specific <stddef.h> */
 #ifndef _SSIZE_T_DEFINED_
 #define _SSIZE_T_DEFINED_