Request for review 7164144 (M)

[Jon Masamitsu]

7164144: Fix variable naming style in freeBlockDictionary.* and 
binaryTreeDictionary*

The naming style in some CMS code is different from the
the predominate style in hotspot.  Some of the CMS classes have
recently been generalized for wider use.  This change normalizes
the naming in those classes.

These changes are strictly name changes.

http://cr.openjdk.java.net/~jmasa/7164144/webrev.00/