Include Mondrian Agg Builder APPLIB in core

[nagoodman]

Currently Mondrian Agg Builder is external to APPLIB. Add this APPLIB extension as part of the main APPLIB installation, knowing there's runtime dependencies missing (eeeks, and we'll need a special build for mondrian libs during build time). This task should also improve the APPLIB procs to catch classnotfoundexceptions and give a nice error message indicating the likely missing Mondrian jars if they haven't been added.