Merge pull request #170 from rocallahan/Unicode

Bug 1011228. Add GCC visibility pragmas to Unicode.h because these are p...
Bug 1008239 - Add support to ubifs for build-flash-fota.py. r=dhylands
Merge pull request #167 from Seinlin/bug-1008239

Bug 1008239 - Add support to ubifs for build-flash-fota.py. r=dhylands
Merge branch 'master' of https://github.com/mozilla-b2g/gonk-misc into better-fota-name