Print Cassandra version used by tests
Update dependencies
Fix potential NPE when preparing query

JAVA-172 #fixes
Avoid buggy error message when a node dies

JAVA-166 #fixes
Make Host#isUp more reliable

This make sure we do some effort to only report that a node is UP after
we've connected to it so the tests can rely on it.

JAVA-174 #fixes
Silence compiler warning for tests
Merge branch '1.0' into 2.0

Conflicts:
	driver-core/src/main/java/com/datastax/driver/core/Cluster.java
	driver-core/src/main/java/com/datastax/driver/core/ControlConnection.java
	driver-core/src/test/java/com/datastax/driver/core/TestUtils.java
	pom.xml