1. Fixed a bug in the oracle version of acs-mail-nt-create.sql
2. Fixed a bug in the oracle version of the APM - a standard SQL92
   left join was being executed rather than the nasty Oracle-specific
   notation.
3. Futzed with the APM a bit - you can now only set "watch" commands on
   those .xql files which are used by the current installation, you can
   only install packages supported by the current installation's RDBMS.