utils.dictconfig and utils.unittest don't work with python 3.0 and 3.1

[adsworth]

utils.log imports the django specific copy of dictconfig is the import from the stdlib fails.
The copy is a copy of the 2.X version of dictconfig.py and this version does not work with py3k.

We can now either:

1. adapt the copy to work with py3k
2. also copy the py3k version of dictconfig and if the import from the stdlib fails make a conditional import depending on if we are running a version >= 3 or not.

[Aymeric Augustin]

This is a problem only on python 3.0 and 3.1, because since 3.2 dictconfig is part of the standard library.

To the best of my knowledge, nobody has decided which versions of python 3 would be supported by Django. It would be reasonable to start support at Python 3.2 (by the time the py3k branch is merged in trunk). In this case, this ticket wouldn't be necessary.

Marking as DDN, the decision to take is "which versions of Python are targeted by the py3k branch?"

[adsworth]

The same applies to utils.unittest. It has a work around for python 2.7, but fails for 3.0 and 3.1 as unittest2 was added in 3.2.

[Jannis Leidel]

This is a good reason to assume that Django starts Python 3 support with 3.2.