fixed unbound function error message
Ruby driver version 1.10.0.1
raise exception for iterative operations on RqlQuery
Improve error message for __iter__ on a RqlQuery
Merge pull request #1506

Closes #1506

Closes #1503
fix undefined variable error for tzname()
fix format string
remove duplicate class definition
Merge pull request #1512

Review by @atnnn and @tryneus

Closes #1512
Merge v1.10.x into next