Revision 999237

HBASE-3018 Bulk assignment on startup runs serially through the cluster servers assigning in bulk to one at a time

M src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
  Removed reentrant lock that spanned moving region into
  regionsintransition and the getting of lock on state object.  It
  was a bad idea.  I found it actually deadlocked.  It shouldn't be needed.
  The call to assign will fail if the state instance is not of the right
  'state' type.
  Run a thread per server parcelling out region assignments so we assign
  across the cluster concurrently rather than in series as we were doing.