Since upstream doesn't ship the phpunit test suite in the tagged version this
package is repacked. The changes applied are:

  - remove the `user_guide` dir which contains the compiled user guide

  - get the `tests` dir from upstream git repo, it contains the test suite

  - get the `user_guide_src` dir from upstream git repo, it contains the user
    guide.

  - remove the `user_guide_src/source/_themes` dir, it contains the rtd theme
