Request for review (XXS): 7193157: G1: Make some develpflags available in product builds

[Bengt Rutisson]

Hi all,

Could I please have a couple of reviews for this really small fix?
http://cr.openjdk.java.net/~brutisso/7193157/webrev.00/

We need to make some of the G1 develop flags available in product builds 
to allow the performance team to tune G1 properly. We decided to make 
the flags experimental to start with. After the performance team has 
evaluated the flags we might make some of them product flags. The 
current prime candidates for becoming product flags are:

G1DefaultMinNewGenPercent
G1DefaultMaxNewGenPercent
G1OldCSetRegionLiveThresholdPercent

Thanks,
Bengt