Android denial of service attack using class 0 SMS messages

Bug 9702645
Bug 11970403 - Change to ClassZeroActivity to singleTask

Cherry pick the change from master.

Making every AlertDialog immediately visible can lead to exhaustion
of graphics-related resources, typically memory, resulting in a
broken bufferqueue/hw renderer, and subsequent system crash.

Make ClassZeroActivity a singleTask activity, and queue incoming
messages if one is already being displayed.

Change-Id: I0aef7b857364acc404e79581ba5e503571065483
Mms: google please cleanup your translations....Mms cleanup

it is really at the moment a nightmare to see compile errors when
getting 100000 of warnings. Whatever we removed already on some
packages the warnings....but still a lot are there

Change-Id: Ibb8709e0d946d69fc13905dec19d2df3e5d989ce
Merge tag 'android-4.4.2_r1' into HEAD

Android 4.4.2 Release 1
Merge remote-tracking branch 'upstream/kk4.4' into kk4.4