RFR: 8034764: Use process_strong_roots to adjust the StringTable

[Stefan Karlsson]

Hi all,

Please, review this patch to reuse process_strong_roots for StringTable 
pointer adjustment during the GenMarkSweep and G1MarkSweep adjust phases.

Webrev:
http://cr.openjdk.java.net/~stefank/8034764/webrev.00/

RFE:
https://bugs.openjdk.java.net/browse/JDK-8034764

The patch is built on top of the patch in:
http://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2014-February/009401.html

thanks,
StefanK