fix build

*missing from 4.2.2 merge

Change-Id: I1dd9710d41a2d2fb0a8a326a4d64cc6987706eef
Signed-off-by: Jonathan Steadman <xxwhitehawk@gmail.com>
GC triggering performance optimizations

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

Change-Id: Ifbc6194310c61c05206f1d425ba5b4ebf8658141