Added behavioral test to validate whether *queryInfo should indeed include a non-empty return value args
Read both the query argument and the result metadata
Only read result column meta data for v2 of the protocol
Merge pull request #204 from relops/empty_return_value_args

Statement preparation has empty return value args
Merge remote-tracking branch 'upstream/master' into expose_query_info
Merge remote-tracking branch 'upstream/master' into expose_query_info