1. Changed trigger functions from "opaque" to "trigger" to get rid of the warnings during initial install (only for acs-kernel, there are a lot elsewhere!)
2. Added "embeds" for postgresql and partially for oracle.
3. Added global parameters for postgresql and partially for oracle.
- Add two missing indices to improve performance of permission system and the object context hierarchy significantly (these two indices improved the performance of e.g. /projects/openacs/download/ and /projects/openacs/download/one-revision?revision_id=2089636 by more than a factor of 10; these indices are now among the most used on openacs.org) - Bump version number