Mods to make overlays work
Some renaming of tutorial examples
Changes to run_imagej and below to properly harvest overlays as masks
Added --no-splash-screen switch to disable the splash screen on startup
more additions to tutorial
CellProfiler appears to be hanging at exit - trying some things to print diagnostic logging and to produce a more orderly thread shutdown
Merge branch 'multiprocessing' of github.com:CellProfiler/CellProfiler into multiprocessing