xdiff: backport int64_t and uint64_t types to Windows

Sadly, MSVC 2008 lacks stdint.h.  These are the only two definitions needed
right now.

mercurial/thirdparty/xdiff/xinclude.h

@@ -1,41 +1,47 b''
 /*
  *  LibXDiff by Davide Libenzi ( File Differential Library )
  *  Copyright (C) 2003  Davide Libenzi
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
  *  version 2.1 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Lesser General Public License for more details.
  *
  *  You should have received a copy of the GNU Lesser General Public
  *  License along with this library; if not, see
  *  <http://www.gnu.org/licenses/>.
  *
  *  Davide Libenzi <[e-mail]>
  *
  */
 
 #if !defined(XINCLUDE_H)
 #define XINCLUDE_H
 
 #include <ctype.h>
+#if !defined(_MSC_VER) || _MSC_VER >= 1600
 #include <stdint.h>
+#else
+/* prior to Visual Studio 2010 */
+typedef long long int64_t;
+typedef unsigned long long uint64_t;
+#endif
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
 
 #include "xmacros.h"
 #include "xdiff.h"
 #include "xtypes.h"
 #include "xutils.h"
 #include "xprepare.h"
 #include "xdiffi.h"
 
 
 #endif /* #if !defined(XINCLUDE_H) */