Reorganization.  Goals are:

* Provide a Drupal 7 compatible HotRod\DrupalCache class.
* Provide more direct access to the underlying c++ api, i.e.
  HotRod\ConfigurationBuilder, HotRod\Configuration,
  HotRod\RemoteCacheManager, HotRod\RemoteCache
Progressing towards the HotRod\DrupalCache class.

Also improving the test framework to use phpt style tests.

TODO: Find the appropriate style for this and apply it.
Merge branch 'master' of https://github.com/bertrama/php-hotrod