RFR (S): 8074546: Rename and clean up the ParGCAllocBuffer class

[Thomas Schatzl]

Hi Joe,

On Tue, 2015-04-07 at 12:16 -0400, Joseph Provino wrote:
> I made the changes recommended by Kim.
> 
> It passes jprt.
> 
> As Kim mentioned, removing plab.h from g1CollectedHeap.hpp could 
> potentially show
> places where plab.h should be included but isn't.
> 
> Is there something else I should do to verify there isn't a problem?

  no. Push it, and let nightly testing sort out the bugs :P

Thanks,
  Thomas