#t and #f added to language, datetime fixes

ml_date.h

@@ -9,6 +9,8 @@
 
 long now();
 
+long get_gmt_localtime_offset();
+
 std::string date_to_string(const long datetime, const std::string format);
 
 long string_to_date(const std::string &datestr, const std::string &format);