Facebook Android SDK 3.8

Summary: Facebook Android SDK 3.8 (see https://developers.facebook.com/docs/android/change-log-3.x/)

Test Plan: Built ZIP

Reviewers: mingfli

Reviewed By: mingfli

CC: subodh

Differential Revision: https://phabricator.fb.com/D1237186
Facebook Android SDK 3.14

Summary: Facebook Android SDK 3.14 (see https://developers.facebook.com/docs/android/change-log-3.x/)

Test Plan: Built ZIP

Reviewers: clang

Reviewed By: clang

CC: platform-diffs@lists

Differential Revision: https://phabricator.fb.com/D1303950
Facebook Android SDK 3.14.1

Summary: Facebook Android SDK 3.14.1 (see https://developers.facebook.com/docs/android/change-log-3.x/)

Test Plan: Built ZIP

Reviewers: clang

Reviewed By: clang

CC: platform-diffs@lists

Differential Revision: https://phabricator.fb.com/D1324593
Facebook Android SDK 3.15.0

Summary: Facebook Android SDK 3.15.0 (see https://developers.facebook.com/docs/android/change-log-3.x/)

Test Plan: Built ZIP

Reviewers: clang

Reviewed By: clang

Subscribers: platform-diffs@lists, dmmiller

Differential Revision: https://phabricator.fb.com/D1380454
Merge branch 'upstream/master'
Update android support library v4 to revision 20