fix saved key cache not loading at startup; patch by yukim reviewed by jbellis for CASSANDRA-5166
Merge branch 'cassandra-1.1' into cassandra-1.2
Preload essential gossip states before startup.
Patch by brandonwilliams, reviewed by slebresne for CASSANDRA-5107
Fix RoundTripTest
Merge branch 'cassandra-1.2' of https://git-wip-us.apache.org/repos/asf/cassandra into cassandra-1.2