RFR: 6899049: G1: Clean up code in ptrQueue.[ch]pp and ptrQueue.inline.hpp

[Thomas Schatzl]

Hi Kim,

On Mon, 2015-11-02 at 18:55 -0800, Kim Barrett wrote:
> Updates for comments from Per and Thomas:
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-6899049
> 
> Webrev:
> http://cr.openjdk.java.net/~kbarrett/6899049/webrev.01/
> http://cr.openjdk.java.net/~kbarrett/6899049/webrev.01.inc/
> 
> Testing of .01 changes:
> JPRT

  looks good.

Thomas