[mythtv] Additional run-time dependencies

[Peter Bennett]

Hi Thomas

There is a change coming soon in MythTV that will require some 
additional run-time dependencies to be installed. The change is to the 
python bindings and ttvbd.py. The change is required to be done before 
October 1st otherwise metadata will fail.

Packages that include python bindings or ttvdb.py will need the 
following additional package installed:

python-pip

Also after the install this needs to be run (by root):

pip install --upgrade future requests_cache requests

I suggest getting these in soon, so that when we commit the code change 
the dependencies will be installed before or with the code change. The 
dependencies can be installed before the code change without causing any 
problem, however installing the code change without the dependencies 
will cause metadata jobs to fail.

Peter