HBASE-9730 Exceptions in multi operations are not handled correctly

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1530728 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9723: TestAsyncProcess#testFailAndSuccess & testThreadCreation are flaky on SUSE

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1530732 13f79535-47bb-0310-9956-ffa450edef68
HBASE=9732 Static AtomicLong updated in StoreFileScanner every (re)seek

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1530764 13f79535-47bb-0310-9956-ffa450edef68