Finished up PG semantics for global/instance parameters on package upgrade. The Tcl API stuff to do this should technically be moved down into the oracle/PG API but 1) it's a fair amount of db-specific work and 2) people should be using the high level constructs in the first place (and why do people explicitly register new parameters when they're registered from the package info file on upgrade in the first place?)
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.