Reviewed by andersca.

        The outermost <svg> element needs to clip itself
        http://bugzilla.opendarwin.org/show_bug.cgi?id=5358

        * css/cssstyleselector.cpp:
        (WebCore::CSSStyleSelector::adjustRenderStyle): adjust for SVG overflow rules
        * kcanvas/RenderSVGContainer.cpp:
        (WebCore::RenderSVGContainer::requiresLayer): only require layers for absolute/relative positioning of outermost SVG
        (WebCore::RenderSVGContainer::paint):
        * kcanvas/device/KRenderingDevice.h:
        * kcanvas/device/quartz/KRenderingDeviceQuartz.h: remove dead methods
        * kcanvas/device/quartz/KRenderingDeviceQuartz.mm: remove dead methods
        (WebCore::KRenderingDeviceContextQuartz::KRenderingDeviceContextQuartz):
        * ksvg2/svg/SVGPaint.cpp: spacing changes
        (WebCore::SVGPaint::SVGPaint): spacing cleanup
        * ksvg2/svg/SVGSVGElement.cpp:
        (WebCore::SVGSVGElement::parseMappedAttribute): spacing cleanup
        * platform/GraphicsContext.h: Added concatCTM
        * platform/cg/GraphicsContextCG.cpp:
        (WebCore::GraphicsContext::concatCTM): Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@15842 268f45cc-cd09-0410-ab3c-d52691b4dbfc