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
frameworks/base: add app launch timeline instrumentation

Displayed Activity is often being used to measure application
launch times. However Displayed Activity only accounts for a
subset of the app launch. This additional instrumentation will
allow for more accurate measurements of applications launch
times.

Change-Id: Ic0bc6f0110c3ecbbce9eccd9357818a8a898475e
ActivityManager: Update timeline debug statements

Update the timeline debug messages so that
'ActivityManager' is not used as the tag in log
messages as it interferes with some CTS tests.
CRs-fixed: 628703

Change-Id: I18c04eb47263246b6cf293210ba603127be99bd9