Fix incorrect fragment animation used for hiding fragments

Mirror of support lib patch
https://android-review.googlesource.com/#/c/60032/ into
frameworks/base.

Change-Id: I8d1cb2e217721336674b8e3e2ef8722a8d9baefd
Merge branch 'jb-mr1' of https://github.com/AOKP/frameworks_base into jb-mr1