More code dealing with instance and global parameter semantics. I finally have a reasonable model of inheritance and semantics implemented, not perfect from a language-theoretic point of view, but works well without having to rewrite every bit of parameter-handling code in acs-core.
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.