HBASE-8341 RestoreSnapshotHandler.prepare() is not called by SnapshotManager and TakeSnapshotHandler should first acquire the table lock

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1468262 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8351 Minor typo in Bytes IllegalArgumentException throw (Raymond Liu)


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1468291 13f79535-47bb-0310-9956-ffa450edef68