Silence stat redefinition warnings under win32

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33989 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Fri Dec  9 08:00:15 2011  Luis Lavena  <luislavena@gmail.com>
+
+	* include/ruby/win32.h: undef stat to silence mingw-w64 stat
+	  redefinition warnings (GCC 4.6.3).
+
 Thu Dec  8 23:38:24 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
 
 	* variable.c (set_const_visibility): clear inine-cache when constant's

include/ruby/win32.h

@@ -126,6 +126,7 @@ extern DWORD rb_w32_osid(void);
 #undef fputchar
 #undef utime
 #undef lseek
+#undef stat
 #undef fstat
 #define getc(_stream)		rb_w32_getc(_stream)
 #define getchar()		rb_w32_getc(stdin)