Update versions and license for 1.2.3
Fix race when opening ColumnFamilyStore; patch by yukim reviewed by jbellis for CASSANDRA-5350
Merge branch 'cassandra-1.1' into cassandra-1.2

Conflicts:
	src/java/org/apache/cassandra/service/AbstractCassandraDaemon.java
Merge branch 'cassandra-1.2' into trunk