Expose a total memtable size metric for a CF

patch by Aleksey Yeschenko; reviewed by Jonathan Ellis for
CASSANDRA-6391
Allow specifying datacentersto participate in a repair
patch by Jimmy Mårdell; reviewed by Lyuben Todorov for CASSANDRA-6218
Remove some vestiges of the old streaming
cqlsh: hanlde symlinks properly

patch by Yinyin L; reviewed by Aleksey Yeschenko for CASSANDRA-6425
Expose thread pool metrics for the native protocol server

patch by mishail; reviewed by slebresne for CASSANDRA-6234
Merge branch 'cassandra-1.2' into cassandra-2.0
Add warning on collection limitations in CQL doc
Change snapshot response message verb

to make sure response do not get dropped

patch by yukim; reviewed by jbellis for CASSANDRA-6415
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	src/java/org/apache/cassandra/service/SnapshotVerbHandler.java
Reduce gossip memory use by interning VersionedValue strings
patch by jbellis; tested by Quentin Conner for CASSANDRA-6410
Merge branch 'cassandra-1.2' into cassandra-2.0
Revert "Reduce gossip memory use by interning VersionedValue strings"

This reverts commit 7ad39601dd3c248595d84f016c41ac35abd786ed.
Merge branch 'cassandra-1.2' into cassandra-2.0
Reduce gossip memory use by interning VersionedValue strings
patch by jbellis; tested by Quentin Conner for CASSANDRA-6410
Warn when a read collection has > 64k elements

patch by slebresne; reviewed by iamaleksey for CASSANDRA-5428
Merge branch 'cassandra-1.2' into cassandra-2.0
Fix merge
fix MoveTest
Merge branch 'cassandra-1.2' into cassandra-2.0
CHANGES