Recover from IOException in accept() thread
patch by Mihial Stepura; reviewed by jbellis for CASSANDRA-6349
free off-heap IndexSummary during bulk load
patch by Tyler Hobbs; reviewed by jbellis for CASSANDRA-6359
Cancel read meter task when closing SSTR
patch by Tyler Hobbs; reviewed by jbellis for CASSANDRA-6358
Invalidate row cache when dropping CF
patch by Fabien Rousseau; reviewed by jbellis for CASSANDRA-6351
merge from 1.2
Improve error message
Disallow updating CQL3 tables from thrift

patch by slebresne; reviewed by jbellis for CASSANDRA-6370
Fix size computation of prepared statements

patch by slebresne; reviewed by lyubent for CASSANDRA-6369
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	NEWS.txt
	src/java/org/apache/cassandra/cql3/QueryProcessor.java
	src/java/org/apache/cassandra/cql3/statements/BatchStatement.java
	src/java/org/apache/cassandra/cql3/statements/DeleteStatement.java
	src/java/org/apache/cassandra/cql3/statements/ModificationStatement.java
	src/java/org/apache/cassandra/cql3/statements/SelectStatement.java
	src/java/org/apache/cassandra/cql3/statements/UpdateStatement.java
	src/java/org/apache/cassandra/thrift/CassandraServer.java
Fix typo
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	src/java/org/apache/cassandra/thrift/CassandraServer.java
add missing String.format parameter
Merge branch 'cassandra-1.2' into cassandra-2.0
Add missing file
Merge branch 'cassandra-1.2' into cassandra-2.0
Fix TokenMetadataTest
remove unnecessary(and failing) test
Fix ScrubTest
Fix LeaveAndBootstrapTest
Fix potential ConcurrentModificationException in tests