Bug 731779: Integrate the Add-on SDK loader and API libraries into Firefox (uplifting from addon-sdk a16bbd5772880b578a939eeb65102bca6560d494)
Bug 793928: Ship the Add-on SDK APIs as part of the platform. r=gps
Bug 793928: Switch users of the promise library to the new location and move tests files. r=gavin

--HG--
rename : toolkit/addon-sdk/test/Makefile.in => addon-sdk/test/Makefile.in
rename : toolkit/addon-sdk/test/unit/head.js => addon-sdk/test/unit/head.js
rename : toolkit/addon-sdk/test/unit/test_promise.js => addon-sdk/test/unit/test_promise.js
rename : toolkit/addon-sdk/test/unit/xpcshell.ini => addon-sdk/test/unit/xpcshell.ini