issue1175: Fixed bug when supplying LIMIT with ROW interval
Throw exceptions in SerializedCellsReader/Writer on empty row key
issue 1180: Fixed intermittent Client-periodic-flush failure
Fixed quote trimming problem in HqlParser
Fixed memory alignment issues with DfsBroker.Local.DirectIO=true
Moved sys/RS_METRICS reading code to Hypertable/Lib/RS_METRICS
Prioritize merging compactions ahead of minor compactions
Added TimeWindow class for defining low activty window
Made merging compaction algo more aggressive during low activity period
issue1159: Fixed CellStoreBlockIndexArray::fraction_covered() bug
Fixed minor logic issues in AccessGroup::run_compaction()
issue1063: Made Defects-issue783-offload1 test more robust
Fixed QFS Broker
Added commons-lang-2.5.jar to fix missing symbol under CDH4.5
Updated for 0.9.7.15 release
Copyright updated
Merge branch 'v0.9.7' of git://github.com/hypertable/hypertable into windows

Conflicts:
	src/cc/Common/Crontab.cc
	src/cc/Common/tests/crontab_test.cc
	src/cc/DfsBroker/local/LocalBroker.cc
	src/cc/Hypertable/RangeServer/MaintenanceFlag.h
	src/cc/Hypertable/RangeServer/MaintenanceScheduler.cc
Version updated to 0.9.7.15