modifying execute function to just return the connection pool

Conflicts:
	cqlengine/connection.py
updating row serialization

Conflicts:
	cqlengine/connection.py
	cqlengine/query.py
fixing a problem with the result cache filler
fixing count method

Conflicts:
	cqlengine/query.py
updating management module to work with the native driver
updating management functions to work with the cql driver
updating connection to work with the cql driver
updating management to work with with the cql driver
fixing some problems with the eager result loading
wrapping query results in a named tuple
updating changelog and version