Warn about changed behavior around '+' characters.
Warn about changed behavior around '+' characters.

Bug: http://code.google.com/p/android/issues/detail?id=21064
Change-Id: I086c2c8433f05185a1496e2662734d239d8cbb74

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base