New memo fixedPoint plus debugging infrastructure.
Deleted a bad old implementation and added what may be the first working parallel implementation.
It requires a horrible two-phase API, however.
Added a bunch of (temporary) debugging stuff that uses graphViz to print out the MemoCyc graphs.
Fix graphviz business to make the start node red
Deactivate debugging in Memo table by default
One more last ditch effort to save the asynch version
Reveal SkipListMap as an export
Make fgl/graphviz/text dependencies only kick in with -fdebug