Bug 947504 - Only enable HwcComposer2D by default if hardware support it
Merge pull request #15419 from changm/bug958318

bug 958318 - Optimize Settings App to find homescreen counts r=arthurcc
Merge pull request #15315 from dwilsoncaf/bug-947504-v1.3

Bug 947504 - Only enable HwcComposer2D by default if hardware support it - v1.3