Facebook Android SDK 3.7

Summary: Facebook Android SDK 3.7 (see https://developers.facebook.com/docs/android/change-log-3.x/)

Test Plan: Built ZIP

Reviewers: clang

Reviewed By: clang

CC: glen, platform-diffs@lists

Differential Revision: https://phabricator.fb.com/D1183743
Merge commit '50e278c98b4a02f13106cf059c6fbb0c648c0edd' into jb-update-from-upstream
Merge pull request #10 from twotoasters/jb-update-from-upstream

Jb update from upstream