Add new GC Log Rotation options to cassandra-env.sh
patch by Jeremiah Jordan; reviewed by jbellis for CASSANDRA-5319
Merge branch 'cassandra-1.2' into trunk
Relax CL for auth queries for non-default users

patch by Aleksey Yeschenko; reviewed by Jonathan Ellis for
CASSANDRA-5310
Merge branch 'cassandra-1.2' into trunk