fix WRITE_SETTINGS to be "dangerous"

(see http://www.fireeye.com/blog/technical/2014/04/occupy_your_icons_silently_on_android.html for an explanation why this is dangerous)

Change-Id: I8f938dc4f528aa2ccbca3d4cec235feb0299c0bd
Fix very long app_name crash.

http://ibrahimbalic.com/2014/android-os-memory-corruption-bug/ found an stack overflow bug.
The very long app_name make libandroid_runtime allocate a very large array on stack, the stack may overflow to other data areas in this situation.
This patch allocate large array on heap instead of on stack to avoid segment fault when doing memcpy.

Change-Id: I99999569b852d43a9c7a6eb1fa80e9f1a1f4e2b2
Merge "fix WRITE_SETTINGS to be "dangerous"" into kitkat
Merge "Fix very long app_name crash." into kitkat