linaro_android_4.2.1 updated to 4.2.1_r1.2 tag build

AOSP recently moved to android-4.2.1_r1.2 tag with a new release build JOP40G. Changes/Updates are limited only to following projects: [] platform/build [] platform/system/core [] platform/system/extras [] device/lge/*

I have merged changes from android-4.2.1_r1.2 to linaro_android_4.2.1. I'm in the process of merging r1.2 changes to project specific branches and I'll send out notification to project lists when I'm done.

Regards, Amit Pundir