8034246: remove CMS and ParNew adaptive size policy code Reviewed-by: tschatzl, jwilhelm, mgerdin

8040977: G1 crashes when run with -XX:-G1DeferredRSUpdate Summary: When G1 is run with -XX:-G1DeferredRSUpdate, the VM crashes because of wrong initialization order of member variables. The change makes the initalization explicit, not relying on initialization order any more. Reviewed-by: brutisso, mgerdin