Swap local and global default read repair chances

patch by Aleksey Yeschenko; reviewed by Jason Brown for CASSANDRA-7320
Merge branch 'cassandra-2.0' into cassandra-2.1

Conflicts:
	CHANGES.txt
	NEWS.txt
	src/java/org/apache/cassandra/config/CFMetaData.java
Merge branch 'cassandra-2.1' into trunk