8170409: CMS: Crash in CardTableModRefBSForCTRS::process_chunk_boundariesReviewed-by: simonis, tschatzl, mgerdin, dlongContributed-by: gunter.haug@sap.com
8130931: Refactor CardTableModRefBS[ForCTRS]Summary: Remove friends and push CTRS-specific code down from base to derivedReviewed-by: tschatzl, mgerdin