Support strong-oracle driver.

This supports the strong-oracle driver. The main difference is the strong-oracle driver compiles on node 0.10, 0.11 and 0.12 while node-oracle compiles on 0.10 only.

strong-oracle also provides access to a native connection pool, though currently that functionality segfaults. (I have an issue opened for that.) I also don't know if there is any advantages with a native connection pool.

Also, in both drivers you can do something like connection.setPrefetchRowCount(100) to configure the prefetch row count for the connection. Prefetching can have a dramatic impact on performance but uses more memory.. This results in much faster streaming in particular.

My strong-oracle-query-stream.js takes advantage of that with the getRows. The same could be done in the node-oracle impl, I believe.