Merge branch 'master' into imageRep
Don't store values only to just return them.
Remove SVGKSourceString and have just SVGKSource fill in the role.
Merge branch 'master' into imageRep
Updating image rep to use SVGKSource's string convenience method.
Merge branch 'imageRep' into arc

Conflicts:
	Source/DOM classes/Core DOM/Document.m
	Source/DOM classes/SVG-DOM/SVGLength.m
	Source/Parsers/Parser Extensions/SVGKParserDOM.m
	Source/Parsers/Parser Extensions/SVGKParserDefsAndUse.m
	Source/Parsers/Parser Extensions/SVGKParserStyles.m
	Source/QuartzCore additions/SVGKLayer.m
	Source/SVGKSource.m
	Source/Sources/SVGKSourceString.m