Revert "Fix a minor leak in handleVM_CreateString"

This reverts commit a3d1ce78b2b590823c418dcb8e20ff9ed996bd70.
Abstract methods aren't implementations.

We should only be checking the visibility of actual implementations
of interface methods. Intervening abstract methods are allowed to
be non-public.

Bug: https://code.google.com/p/android/issues/detail?id=42991
Change-Id: I510d0cc6c1f89d161d4ebad7ef058c03fa09e9b0
GC triggering performance optimizations

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

Change-Id: I1080ba60ae64d546c0f35925bc7c931b89c7600b