PHP Core libraries

- add 4dev/ folder

4dev/database/trigger/trg_edit_scheme.sql

@@ -0,0 +1,6 @@
+-- $Id: trg_edit_scheme.sql 3158 2010-09-02 02:49:00Z gullevek $
+
+-- DROP TRIGGER trg_edit_scheme ON edit_scheme;
+CREATE TRIGGER trg_edit_scheme
+BEFORE INSERT OR UPDATE ON edit_scheme
+FOR EACH ROW EXECUTE PROCEDURE set_generic();