Merge pull request #18 from rmmccann/master

Merged in changes to cdmiller's changes to Chainsaw, rmmccann's changes to ShipOdyssey and RockRoll.
Sawdust (sawdustParticles) resting place moved up so they are visible in game window (for DG).
Results overlay (mResultsOverlay) moved down and to right so player can click directly
 on the Start or Level button without clicking to clear the Results Overlay first.
 It is still possible to click to clear the Results Overlay, but Start and Level
 buttons also clear it to save a mouse click.
New Chainsaw v.2012-12-18
build ShipOdyssey v2012.11.30 for DG. (from Ryan), where Games are now only one treasure each.
Fill in missing some entries in ShipOdyssey log.
revise Chainsaw change log header for clarity.