Issue with github provider

[brunosmmm]

Hello, I was getting a warning: unknown provider 'github' that blocked me from doing anything with the program since it aborted at that point, not finding any more cores.

Upon further inspection of source code I found that the problem here in my sistem was caused by github.py trying to load URLError from urllib.error which is fine on python 3 but the default is 2.7 here, so I made this modification : http://pastebin.com/V0cEcnkF .

I am having other problems with fusesoc but I'll leave that for other issue later. Thanks.

[olofk]

Whoops. Looks like I slipped up with my python 2 testing. Patch is applied and pushed. Thanks a lot, and keep reporting problems.