Bug 780561 - Import new packager code. r=gps
Bug 780561 - Unit tests for the new packager code. r=ted,r=gps
Bug 780561 - Use new packager code for l10n repacks. r=ted
Bug 780561 - Don't try to install *.xpm files, we don't have any nowadays. r=ted
Bug 780561 - Fix the buildconfig python module handling of environment variables. r=ted
Bug 780561 - Use new packager code for packaging (packager.mk) r=ted
Bug 780561 - Remove now unused bits of the packaging scripts. r=ted
Merge m-c to inbound.
Backed out changesets a2f8673cfafa and c7bc74ed9256 (bug 781570) for b2g bustage.