HBASE-7777 HBCK check for lingering split parents should check for child regions

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1451028 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7725: Add ability to create custom compaction request

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1451057 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7878 revert due to TestHLogSplit test failure



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1451077 13f79535-47bb-0310-9956-ffa450edef68