Allow executing CREATE statement multiple times

patch by slebresne; reviewed by jbellis for CASSANDRA-6471
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	CHANGES.txt
Fix infinite loop when paging queries with IN

patch by slebresne; reviewed by iamaleksey for CASSANDRA-6464
Merge branch 'cassandra-2.0' into trunk
Fix merge
Don't send confusing info on timeouts

patch by slebresne; reviewed by jbellis for CASSANDRA-6491
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	CHANGES.txt
	src/java/org/apache/cassandra/service/ReadCallback.java
	src/java/org/apache/cassandra/service/StorageProxy.java
Merge branch 'cassandra-2.0' into trunk
Update docs, bump CQL3 version, correct CHANGES.txt for CASSANDRA-6395
Merge branch 'cassandra-2.0' into trunk

Conflicts:
	CHANGES.txt
add client encryption support to sstableloader
patch by Sam Tunnicliffe; reviewed by Mikhail Stepura for CASSANDRA-6378
Merge branch 'cassandra-2.0' into trunk
add SSLTransportFactory.java
Merge branch 'cassandra-2.0' into trunk
remove dead code
Don't drop local mutations without a trace

patch by Aleksey Yeschenko; reviewed by Jonathan Ellis for
CASSANDRA-6510
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	CHANGES.txt
Merge branch 'cassandra-2.0' into trunk
Ninja fix typo
Don't allow null max_hint_window_in_ms
patch by Nate McCall; reviewed by jbellis for CASSANDRA-6419