Netezza support

Initial adapter for IBM netezza
Why version `1` of Netezza JDBC driver? It's good to use the real version. I don't know what's latest version of the driver (7.0.3?); but [here](http://pic.dhe.ibm.com/infocenter/iidr/v10r2m1/index.jsp?topic=%2Fcom.ibm.cdcdoc.cdcfornetezza.doc%2Fconcepts%2Fsupportedjdbcdrivers.html) I can see a 6.0.3 or higher mentioned.