Bug 874257 - Preserve /system/b2g/distribution/ during gecko install
Merge pull request #89 from askeing/Bug_867031

Bug 867031 - [CustomizeUI] Cannot preload contacts during build time. r=mwu(cherry picked from commit 35612c6ff764b43db4d3e43761b79eeeb88b6fc9)
Bug 876818 - Add gecko tests to tests.zip, r=mwu
Bug 877495 - change file descriptor's limit to 8192