Bug 902525 - Part 1: Layers changes r=roc
Bug 902525 - Part 2: Create layers for isolated groups when blending is involved r=roc
Bug 902525 - Part 3: create a layer for content that stores the blend mode r=roc
Bug 902525 - Part 4: first set of testfiles for SVG blending r=roc
Bug 902525 - Part 5: fixes for blending of HTML elements r=roc
Bug 902525 - Part 6: some basic test files for HTML blending r=roc
Bug 902525 - Part 7: fix to turn off text anti-aliasing r=roc