7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
Summary: Major cleanup of the G1CollectorPolicy class. It removes a lot of unused fields and methods and also consolidates replicated information (mainly various ways of counting the number of CSet regions) into one copy.
Reviewed-by: johnc, brutisso
7116730: Revert 7116481: Commercial features in Hotspot must be gated by a switch
Summary: Revert 7116481 to current hsx/hotspot-main
Reviewed-by: kamg