Fix row tombstones in larger-than-memory compactions
patch by thobbs; reviewed by jbellis for CASSANDRA-6008
Merge branch 'cassandra-2.0' into trunk
clarify that we only collect row-level tombstone in LCR constructor
merge from 2.0
fix stats to omit purged row tombstone
Merge branch 'cassandra-2.0' into trunk
add back shouldPurge check before counter merging
Merge remote-tracking branch 'origin/trunk' into trunk