Record the real messaging version in all cases in OutboundTcpConnection

patch by Aleksey Yeschenko; reviewed by Piotr Kołaczkowski for
CASSANDRA-8057
Don't reset nodes' versions when closing IncomingTcpConnections

patch by Aleksey Yeschenko; reviewed by Marcus Eriksson for
CASSANDRA-7734
Merge branch 'cassandra-2.0' into cassandra-2.1

Conflicts:
	CHANGES.txt
	src/java/org/apache/cassandra/net/IncomingTcpConnection.java
Force exit vs trying to cleanup all threads for stress
Add an assert to RowDataResolver#getData()
Schedule fat client schema pull on join

patch by Oleg Anastasyev; reviewed by Aleksey Yeschenko for
CASSANDRA-7993
Merge branch 'cassandra-2.0' into cassandra-2.1

Conflicts:
	CHANGES.txt
Don't re-parse already prepared statements

Patch by Benedict Elliot Smith and Tyler Hobbs; reviewed by Aleksey
Yeschenko for CASSANDRA-7923
custom exceptions should derive from Exception, not Throwable
ninja reviewed by yukim