Store: Removed CLIENT_POST_ID and CLIENT_GET_ID. Various functions: check if supplied store is known. Check that STORE_ZERO never saves a value. New mode for setVar(): overWrite.
Constants: New qfq.log. SQL_FORM_ELEMENT splitted to SQL_FORM_ELEMENT_SPECIFIC_CONTAINER|ALL_CONTAINER. New ROW_INSERT, ROW_UPDATE. Renamed STORE_ZERO to STORE_0.