adding message catalog upgrade support to the acs-lang package. message keys and messages now have an upgrade status (added, deleted, updated). Being more rigorous about determining what is a catalog file and moving this logic to the acs-bootstrap-installer package (apm_is_catalog_file) as it is needed before the acs-lang library is loaded. Updated procedure documentation.
Removed (currently unnecessary) "for update" clauses - with the transactiongone, they only slow things down. If we want multiple sweepers to work wewill need to do something but the huge transaction causes problems on systemswith a lot of bulk mail activity (sloanspace, in particular)