Fix two pedantic issues with our builtin headers. The __STDC_VERSION__

for C99 is '199901L' and we shouldn't be comparing it with anything
else.

Neither of these should have had any impact in practice.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201738 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Headers/limits.h

@@ -89,7 +89,7 @@
 /* C99 5.2.4.2.1: Added long long.
    C++11 18.3.3.2: same contents as the Standard C Library header <limits.h>.
  */
-#if __STDC_VERSION__ >= 199901 || __cplusplus >= 201103L
+#if __STDC_VERSION__ >= 199901L || __cplusplus >= 201103L
 
 #undef  LLONG_MIN
 #undef  LLONG_MAX

lib/Headers/stdarg.h

@@ -39,7 +39,7 @@ typedef __builtin_va_list va_list;
  */
 #define __va_copy(d,s) __builtin_va_copy(d,s)
 
-#if __STDC_VERSION__ >= 199900L || __cplusplus >= 201103L || !defined(__STRICT_ANSI__)
+#if __STDC_VERSION__ >= 199901L || __cplusplus >= 201103L || !defined(__STRICT_ANSI__)
 #define va_copy(dest, src)  __builtin_va_copy(dest, src)
 #endif