Description of problem:
The pitivi RPM should require python-setuptools, it does not work without it.

Version-Release number of selected component (if applicable):
$ rpm -q pitivi
pitivi-0.13.3-2.fc12.noarch

How reproducible:
Always

Steps to Reproduce:
1. Remove python-setuptools
2. Install pitivi, noting that python-setuptools is not re-installed
3. Launch pitivi from the command line, noting that it dies during launch
  
Actual results:

--------
$ pitivi 
Traceback (most recent call last):
  File "/usr/bin/pitivi", line 118, in <module>
    _run_pitivi()
  File "/usr/bin/pitivi", line 111, in _run_pitivi
    import pitivi.application as ptv
  File "/usr/share/pitivi/python/pitivi/application.py", line 46, in <module>
    from pitivi.pluginmanager import PluginManager
  File "/usr/share/pitivi/python/pitivi/pluginmanager.py", line 36, in <module>
    import pkg_resources
ImportError: No module named pkg_resources
--------

Expected results:

World peace and a working video editor.

Additional info:

Appears to be working fine after manually installing python-setuptools.