GC triggering performance optimizations

Copy the correct starting heap size at process init.
Interfaces to set GC/managed heap parameters.

Change-Id: I0154d1523c3cfdb1214ed0315193cbb24704351f
gps: Add support for Qualcomm GPS hardware

 * This ABI is changed, but we aren't using the new features in MR1.
 * Add a little translation for the changed fields and methods.

Change-Id: Ieecc2235b42f64fc69d4651855f4e9edfe7d738d