Update the tcmalloc vendor branch to r144 (gperftools 2.0).

third_party/tcmalloc/vendor/src/windows/port.h

 /* Copyright (c) 2007, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 47 matching lines @@
 #include <process.h>         /* for _getpid */
 #include <limits.h>          /* for PATH_MAX */
 #include <stdarg.h>          /* for va_list */
 #include <stdio.h>           /* need this to override stdio's (v)snprintf */
 #include <sys/types.h>       /* for _off_t */
 #include <assert.h>
 #include <stdlib.h>          /* for rand, srand, _strtoxxx */
 
 /*
  * 4018: signed/unsigned mismatch is common (and ok for signed_i < unsigned_i)
- * 4244: otherwise we get problems when substracting two size_t's to an int
+ * 4244: otherwise we get problems when subtracting two size_t's to an int
  * 4288: VC++7 gets confused when a var is defined in a loop and then after it
  * 4267: too many false positives for "conversion gives possible data loss"
  * 4290: it's ok windows ignores the "throw" directive
  * 4996: Yes, we're ok using "unsafe" functions like vsnprintf and getenv()
+ * 4146: internal_logging.cc intentionally negates an unsigned value
  */
 #ifdef _MSC_VER
-#pragma warning(disable:4018 4244 4288 4267 4290 4996)
+#pragma warning(disable:4018 4244 4288 4267 4290 4996 4146)
 #endif
 
 #ifndef __cplusplus
 /* MSVC does not support C99 */
 # if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L
 #  ifdef _MSC_VER
 #    define inline __inline
 #  else
 #    define inline static
 #  endif
@@ skipping 321 matching lines @@
 
 /* ----------------------------------- OTHER */
 
 inline void srandom(unsigned int seed) { srand(seed); }
 inline long random(void) { return rand(); }
 inline unsigned int sleep(unsigned int seconds) {
   Sleep(seconds * 1000);
   return 0;
 }
 
+// mingw64 seems to define timespec (though mingw.org mingw doesn't),
+// protected by the _TIMESPEC_DEFINED macro.
+#ifndef _TIMESPEC_DEFINED
 struct timespec {
   int tv_sec;
   int tv_nsec;
 };
+#endif
 
 inline int nanosleep(const struct timespec *req, struct timespec *rem) {
   Sleep(req->tv_sec * 1000 + req->tv_nsec / 1000000);
   return 0;
 }
 
 #ifndef __MINGW32__
 inline long long int strtoll(const char *nptr, char **endptr, int base) {
     return _strtoi64(nptr, endptr, base);
 }
@@ skipping 29 matching lines @@
  */
 #define GOOGLE_MAYBE_THREADS_H_ 1
 
 
 #endif  /* _WIN32 */
 
 #undef inline
 #undef EXTERN_C
 
 #endif  /* GOOGLE_BASE_WINDOWS_H_ */