HBASE-7578 TestCatalogTracker hangs occasionally

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1434437 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7592 HConnectionManager.getHTableDescriptor() compares too much

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1434532 13f79535-47bb-0310-9956-ffa450edef68