Fix thundering herd on endpoint cache invalidation
patch by rbranson and jbellis for CASSANDRA-6345
merge from 1.2
fix build
Merge branch 'cassandra-1.2' into cassandra-2.0
fix build more
Merge branch 'cassandra-1.2' into cassandra-2.0
fix merge
r/m debug output
merge from 1.2
move pig-test out of normal unit tests (still part of test-all)
Improve gossip performance for typical messages
patch by jbellis; tested by Quentin Conner for CASSANDRA-6409
Merge branch 'cassandra-1.2' into cassandra-2.0
Fix CQLSSTableWriterTest
Backport json2sstable range tombstone fix from 2.0
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	src/java/org/apache/cassandra/tools/SSTableImport.java
simple spelling fix
patch by rcoli reviewed by dbrosius for ninja
Merge branch 'cassandra-1.2' into cassandra-2.0
Throw IRE if a prepared query has more markers than supported

patch by lyubent; reviewed by slebresne for CASSANDRA-5598
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	src/java/org/apache/cassandra/cql3/QueryProcessor.java
Expose a total memtable size metric for a CF

patch by Aleksey Yeschenko; reviewed by Jonathan Ellis for
CASSANDRA-6391