Revert back to system defined dalvik heap

Conflicts:

	system.prop
Enabled world phone preferences menu
Samsung should actually be all in lowercase
msm7x30:  Fix audio in Hangouts

* Add higher sample rates and stereo input device

Change-Id: Ifb2897bea1333a5e271c5b9adbb12ca44d279bb6
Remove custom oncrpc node permissions
Clean out unused code from liblights

Change-Id: I1da6f43547c2593f13ccf2286e33fe35b4005a55
Put back dalvik.vm.dexopt-data-only=1

 * Was accidentally removed in a previous commit