Bug 929905 - Consolidate sources in moz.build. r=gps

accessible/src/atk/moz.build

accessible/src/base/moz.build

accessible/src/generic/moz.build

accessible/src/html/moz.build

accessible/src/mac/moz.build

accessible/src/other/moz.build

accessible/src/windows/ia2/moz.build

accessible/src/windows/msaa/moz.build

accessible/src/windows/sdn/moz.build

accessible/src/windows/uia/moz.build

accessible/src/xpcom/moz.build

accessible/src/xul/moz.build

b2g/app/moz.build

b2g/gaia/moz.build

browser/app/moz.build

browser/components/about/moz.build

browser/components/build/moz.build

browser/components/dirprovider/moz.build

browser/components/feeds/src/moz.build

browser/components/migration/src/moz.build