introduce conf_d, required by beaver
databases/py-redis: Update to 2.7.4

- Allow OPTIONSFILE to be overridden
- Add regression-test: target

Changes: https://github.com/andymccurdy/redis-py/blob/2.7.4/CHANGES

Approved by:	eadler, rm (mentors, implicit)
databases/py-redis: Update to 2.7.6

- Update to 2.7.6
- Update setup.py patch

Changes:

* 2.7.6
    * Added CONFIG RESETSTAT command. Thanks Yossi Gottlieb.
    * Fixed a bug introduced in 2.7.3 that caused issues with script objects
      and pipelines. Thanks Carpentier Pierre-Francois.
    * Converted redis-py's test suite to use the awesome py.test library.
    * Fixed a bug introduced in 2.7.5 that prevented a ConnectionError from
      being raised when the Redis server is LOADING data.
    * Added a BusyLoadingError exception that's raised when the Redis server
      is starting up and not accepting commands yet. BusyLoadingError
      subclasses ConnectionError, which this state previously returned.
      Thanks Yossi Gottlieb.
* 2.7.5
    * DEL, HDEL and ZREM commands now return the numbers of keys deleted
      instead of just True/False.
    * from_url now supports URIs with a port number. Thanks Aaron Westendorf.
introduce py-glob2, required by beaver
introduce beaver