[gentoo-dev] repoman warning on python data_files

[yac]

Hi

I have just noticed that if package is using relative paths in::

    setup.py data_files = ...

Then the files are installed right into /usr in case of CPython (The
exact dest is determined by sys.prefix)

So, I'm thinking it could be worthwhile to add a warning to repoman if
package is using this method as I can imagine this can be easily
overlooked when creating a new package or mostly when bumping one.