Pseudo namespaced build results for #48 / #45

:no_entry_sign: Do not merge, using this to share results. :no_entry_sign: 

This PR is the result of running the `phing` command with `wsdl2php.enableNamespaces=True` (after a modification to the `build.xml` file. The related bugs are #48 and #45, as this branch is unusable because of those issues.

The [sunset](https://developers.google.com/adwords/api/docs/sunset-dates) for the v201309 library is July 21 (14 days as of this writing). As of right now, I don't have a way to prevent an outage for our users because I cannot get the updated version of the SDK to build for our environment that already uses classes named `Campaign` and `Keyword` extensively.