OBEX: Reduce Obex MTU size for A2DP or SCO concurrency

Reduce Obex MTU to 8k from 64k when OPP send is tried with
SCO / A2DP streaming in progress, so that the continue
response for first complete Obex PUT packet is received
from SOC within 50 seconds time frame.

CRs-Fixed: 571865
Change-Id: I1eae114f57f2a92ee4b26c82d8f55fafe02775b8
Lockscreen: Add chinese string for airplane mode

There is no chinese string resource for lockscreen_airplane_mode_on.

Define the chinese string for airplane mode.

CRs-Fixed: 561393

Change-Id: I59d2fd42f8b3140a934614a4977dc7ade0332c6d
/platform/frameworks/base: Fix SystemUI crash on Recent App

Issue: SystemUI crash is observed when Context MenuItem is
       selected on the recent apps activity [Long pressing
       two recent apps at same time or Long press, lock and
       unlock the screen]

Fix: Changed the code to make sure that only one context
     menu is active at a time and also dismissed the
     context menu on pause of the RecentsActivity

CRs-Fixed: 539509

Change-Id: Ia50bed7bfad6fde7beeaec37fa6402177eee1d40