- Replace vsprintf function in bg_lib.c with vsnprintf implementation started by Patrick Powell.

- Remove all calls to vsprintf in the engine and gamecode and replace them with calls to vsnprintf.

code/qcommon/common.c

@@ -269,7 +269,7 @@ void QDECL Com_Error( int code, const char *fmt, ... ) {
 	com_errorEntered = qtrue;
 
 	va_start (argptr,fmt);
-	vsprintf (com_errorMessage,fmt,argptr);
+	Q_vsnprintf (com_errorMessage, sizeof(com_errorMessage),fmt,argptr);
 	va_end (argptr);
 
 	if (code != ERR_DISCONNECT && code != ERR_NEED_CD)