python dependencies and pyrequires_eq macro

[wrobell]

long time ago i have invented pyrequires_eq macro to automate specifaction
of python dependencies for python based applications and libraries.

currently, this macro is no longer required
- there is something better, which injects python abi dependency
- pyrequires_eq does basically nothing, it just duplicates "Requires" field

i would like to start removal of pyrequires_eq from spec files on HEAD, soon.

any comments?

regards,

    wrobell <wrobell at pld-linux.org>