small refactorings; initial sketchy work in running Core
some more small refactorings of standalone types to separate modules
some more small refactorings of standalone types to separate modules, fix of a gen program
more precise aspect labeling of source code to allow for compiler version without grin (or other machine dependent stuff)
fixes for breaking regression tests
bit of framework for CoreRun, a specialized (more efficient) representation for running Core
work on CoreRun
work on CoreRun: ironing out some obvious errors
CoreRun gen ok (on sight, untested)
move of Run stuff to CoreRun, factor out mod merge
refactor of core merge
bit of cleanup (textual only)
CoreRun inverse name to ref mapping
work on CoreRun