Add get commands for compaction/streaming throughput to nodetool.
Patch by Michal Michalski, reviewed by brandonwilliams for
CASSANDRA-5588
Merge branch 'cassandra-1.2' into trunk

Conflicts:
	src/java/org/apache/cassandra/tools/NodeCmd.java
	src/resources/org/apache/cassandra/tools/NodeToolHelp.yaml