Bug#21770366 backport bug#21657078 to 5.5 and 5.6

Problem Statement
=========
Fix various issues when building MySQL with Visual Studio 2015.

Fix:
=======
- Visual Studio 2015 adds support for timespec. Add check and
  related code to use this and only use our replacement if
  timespec is not defined.
- Rename lfind/lsearch to my* to avoid redefinition problems.
- Set default value for TMPDIR to "" on Windows as P_tmpdir
  no longer exists.
- using VS definition of snprintf if available
- tzname are now renamed to _tzname.

1 files changed, 3 insertions, 4 deletions

diff --git a/plugin/semisync/semisync_master.cc b/plugin/semisync/semisync_master.cc
index 2e40fc8b5c5..40d577e4372 100644
--- a/plugin/semisync/semisync_master.cc
+++ b/plugin/semisync/semisync_master.cc
@@ -1,6 +1,5 @@
 /* Copyright (C) 2007 Google Inc.
-   Copyright (c) 2008 MySQL AB, 2008-2009 Sun Microsystems, Inc.
-   Use is subject to license terms.
+   Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -48,7 +47,7 @@ static int getWaitTime(const struct timespec& start_ts);
 
 static unsigned long long timespec_to_usec(const struct timespec *ts)
 {
-#ifndef __WIN__
+#ifdef HAVE_STRUCT_TIMESPEC
   return (unsigned long long) ts->tv_sec * TIME_MILLION + ts->tv_nsec / TIME_THOUSAND;
 #else
   return ts->tv.i64 / 10;
@@ -683,7 +682,7 @@ int ReplSemiSyncMaster::commitTrx(const char* trx_wait_binlog_name,
       }
 
       /* Calcuate the waiting period. */
-#ifdef __WIN__
+#ifndef HAVE_STRUCT_TIMESPEC
       abstime.tv.i64 = start_ts.tv.i64 + (__int64)wait_timeout_ * TIME_THOUSAND * 10;
       abstime.max_timeout_msec= (long)wait_timeout_;
 #else