Changes

Add tracepoint for MM_cleanUpSegmentsInAnonymousClassLoader stats

Adding a new tracepoint to provide extra details about Anonymous classes
unloading process. Also added missed "Group" parameter to
Trc_MM_clearheap tracepoint.

Signed-off-by: Dmitri Pivkine <Dmitri_Pivkine@ca.ibm.com>
 (commit: 23c7797)