Fix typo in DeletionInfo
Update versions and NEWS for 1.2.16 release
Fix batchlogManager#deleteBatch() use of millisecond timsestamps

patch by Aleksey Yeschenko; reviewed by Pavel Yaskevich for
CASSANDRA-6822
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	CHANGES.txt
	NEWS.txt
	build.xml
	debian/changelog
	src/java/org/apache/cassandra/db/BatchlogManager.java
	src/java/org/apache/cassandra/db/DeletionInfo.java