[TIP] Whence discover?

[Robert Collins]

The discover package was needed for Python2.6, but I haven't
backported the discovery improvements from cpython to it (partly
because I forgot until now that it exists). I don't think we need two
distinct backports of the cpython unittest code base - so I'd like to
propose that we sunset discover and encourage people to migrate to
using unittest2 for their backported needs.

Thoughts?
-Rob

-- 
Robert Collins <rbtcollins at hp.com>
Distinguished Technologist
HP Converged Cloud