For SR information, please consult the SR list for 6572569.
6572569 was used for fixing a bug in CMSScavengeBeforeRemark (for JDK 7) and
for backporting the CMSScavengeBeforeRemark feature to older releases which
latter subCR's were closed as "Fix Delivered".
There is however work remaining to be done to fully address this bug, which
was deferred at that time and CR 6572569 kept open for that reason. However,
for process reasons we should not be overloading one CR for these multiple
pieces of work, so the balance of the work planned under that CR is
being brought forward into this CR. I have copied verbatim the contents of
the Suggested Fix and Evaluation sections of the old CR, so they are
recorded here for if/when we get to it.