issue 1156: When performing GC compaction, measure actual garbage before proceeding
Cleaned up FragmentData class and added doxygen comments
Fixed monitoring UI table detail graph rendering for nested namespaces
issue 1161: Fixed bug in Java SerializedCellWriter.add_delete()
Fixed crash in ThriftBroker when passing in bad object ID
issue 1160: Throw exception on bad counter column option combinations in schema parse