[Portability] Implemented snprintf() function to support old compilers



git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@3290 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/common-config.win.h b/common/common-config.win.h
index e68d372..b984fb4 100644
--- a/common/common-config.win.h
+++ b/common/common-config.win.h
@@ -2,3 +2,6 @@
 
 #define HAVE_VSNPRINTF 1
 #define vsnprintf _vsnprintf
+
+#define HAVE_SNPRINTF 1
+#define snprintf _snprintf