bump thrift-server version to 0.3.7 to properly shutdown invocation pool shutdown
patch by Pavel Yaskevich; tested by Philip Thompson for CASSANDRA-7594
Merge branch 'cassandra-2.0' into cassandra-2.1

Conflicts:
	build.xml
Merge branch 'cassandra-2.0' into cassandra-2.1.0
Merge branch 'cassandra-2.1.0' into cassandra-2.1
Merge branch 'cassandra-2.1' into trunk