Bug #: 4463

Bug #: 4463
Submitted by: Tobias Lidskog <tobiaslidskog@mac.com>
Reviewed by: eseidel
        * kcanvas/device/KRenderingPaintServerSolid.cpp:
        * kcanvas/device/KRenderingPaintServerSolid.h:
        * kcanvas/device/quartz/KRenderingPaintServerQuartz.mm:
        (KRenderingPaintServerSolidQuartz::draw):
        * svg-tests/W3C-SVG-1.1/animate-elem-22-b-expected.png:
        * svg-tests/W3C-SVG-1.1/masking-opacity-01-b-expected.png:
        Group opacity was doubly-applied.  This patch fixes that.
        http://bugzilla.opendarwin.org/show_bug.cgi?id=4463

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@10280 268f45cc-cd09-0410-ab3c-d52691b4dbfc