HBASE-12086 Fix bug of HTableMultipliexer

Signed-off-by: Elliott Clark <eclark@apache.org>
HBASE-11948 graceful_stop.sh should use hbase-daemon.sh when executed on the decomissioned node (Sebastien Barrier)
HBASE-11995 Use Connection and ConnectionFactory where possible (Solomon Duskis)
HBASE-12052: BulkLoad Failed due to no write permission on input files
HBASE-12052: BulkLoad Failed due to no write permission on input files - Addendum
HBASE-12090 Bytes: more Unsafe, more Faster. (Vladimir Rodionov)
HBASE-11957 addendum 2; fix TestAssignmentManager
HBASE-11920 Add CP hooks for ReplicationEndPoint
HBASE-12110 Fix .arcconfig

Summary: Not many people are currently using arc but it's a nice tool for the developers who are used to it. Since it's already there let's make it work.

Test Plan: If this works then it's tested.

Differential Revision: https://reviews.facebook.net/D24075
HBASE-12079 Deprecate KeyValueUtil#ensureKeyValue(s).
HBASE-12082 Find a way to set timestamp on Cells on the server.