Rename the self's in the XML helper functions to NSctx: using "self" was confusing Xcode.
Implement a drawInRect: function in the image rep. This should help with scaling.
Add a block function around the image rep's TIFF exporting functions.
Implement a way to get a TIFF with an arbitrary size from the image rep.
Changing how TIFF creation is handled on the image rep.
We don't have to worry about resetting the size: the next time the image is drawn it will reset the size.
Merge branch 'master' into arc

Conflicts:
	Source/Parsers/SVGKParser.m
	XCodeProjectData/ImageRep/SVGKitImageRep.m
Make the OS X demo build on ARC.