arcification...
Merge branch 'develop' into arc

Conflicts:
	Source/Mac/ECAboutBoxController.m
	Source/Mac/ECCompletionTextView.m
additional arc stuff
Merge remote-tracking branch 'origin/develop' into arc

Conflicts:
	Source/Mac/ECAppDelegate.m
	Source/Mac/ECIsValueTransformer.m
	Source/Mac/ECLegalFilenameFormatter.h
	Source/Mac/ECMacStore.m
	Source/Mac/ECMacStoreReceipt.m