Moved the bootstrap and installer stuff into their own mini-package, which let me clean up the loading of acs-tcl a bit and isolate all the bits of APM-knowledge required in the pre-acs-tcl bootstrapping process into a single apm file. In general, bootstrap.tcl is cleaner and easier to read.
bootstrapper can now load either the Oracle or PostgreSQL acs-kernel datamodel. It checks on-the-fly for which db is configured in the OpenNSD database pools allocated to OpenACS. Only acs-kernel is correctly self- configured at this point.