Supporting Python 2 and 3 in libpeas

[Jakub Wilk]

* Barry Warsaw <barry at python.org>, 2012-06-18, 18:07:
>I don't want to add Conflicts headers to the python-libpeas and 
>python3-libpeas packages because I think it's entirely reasonable to 
>have mixed Python 2 and Python 3 libpeas plugins on the same *system*, 
>but of course it makes no sense to have mixed plugins in the same 
>*application*. Would a Build-Conflict in the binary packages help to 
>prevent this,

Build-Conflict is a source package field. It doesn't make sense for 
binary packages.

-- 
Jakub Wilk