RFR: (S): 8153117: Back out JDK-8142935 until JDK-8152723 fixed

[Thomas Schatzl]

Hi,

On Mon, 2016-04-04 at 11:57 -0400, Tom Benson wrote:
> Hi,
> Please take a look at this change to back out the recent G1 change
> for 
> JDK-8142935 (Adding old gen regions does not consider available free 
> space) until the side effect reported in JDK-8152723 is fixed. Under 
> stress, old gen regions might be shut out of mixed GCs, eventually 
> triggering a full GC.
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8153117
> webrev: http://cr.openjdk.java.net/~tbenson/8153117/webrev/
> testing: JPRT builds
> Thanks,
> Tom

  looks good. Ship it.

Thomas