ACCUMULO-1615 applying Ravi Mutyala's patch to 1.5 branch
ACCUMULO-1312 use Credentials object to avoid serializing as long as
possible
ACCUMULO-1312 Fix mapred and proxy serialization issues.
ACCUMULO-1565 applying Sean Hickey's patch
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/accumulo
ACCUMULO-1565 fixed clone table NPE when excluding props
Merge remote-tracking branch 'origin/1.5.1-SNAPSHOT'

Conflicts:
	core/src/main/java/org/apache/accumulo/core/client/admin/TableOperationsImpl.java
	server/src/main/java/org/apache/accumulo/server/master/Master.java
Merge branch 'master' into ACCUMULO-112
Merge branch 'ACCUMULO-112' of github.com:keith-turner/accumulo into ACCUMULO-112