Unbounded (?) thread growth connecting to an removed node
Patch by Vijay, reviewed by Brandon Williams for CASSANDRA-5175
Fix test failures for CASSANDRA-5175
fix sstable maxtimestamp forrow deletes andpre-1.1.1 sstables
patch by jbellis; reviewed by slebresne for CASSANDRA-5153
merge from 1.1
Merge branch 'cassandra-1.2' into trunk