BuildRequires on python-abi

[Bill Nottingham]

seth vidal (skvidal at phy.duke.edu) said: 
> Hey folks,
>  I was looking at some packages with:
> 
> BuildRequires: python-abi = %{pyver}

This seems wrong to have in *any* case. What version of python
a module requires to build seems like it would be tied specifically
to why python features it uses. For example, python-frobozz uses
no new python features, and would need;

BuildRequires: python

while python-mumblefrotz uses some random new thing, and would need:

BuildRequires: python-abi = 2.4

I don't think the build reuqires should be autogenerated at all.

Bill