ACCUMULO-3048 Update CHANGES for 1.5.2
Merge branch '1.5.2-SNAPSHOT' into 1.6.1-SNAPSHOT

Conflicts:
	CHANGES
Merge branch '1.6.1-SNAPSHOT'
ACCUMULO-3047 delete entries created by deleterows were incorrectly de-relativized
Merge branch '1.6.1-SNAPSHOT'