[aur-general] python/python2/python3 changes

[Rémy Oudompheng]

Hello,

Since python 2.7 in testing is now /usr/bin/python2 but not
/usr/bin/python, most AUR packages using python should be changed to
use /usr/bin/python2 and depend on python2 instead of python unless
they use Python 3. Idon't think this has been mentioned explicitly on
this mailing-list before. This change should leave packages compatible
with the python package in extra. Any additional comments?

-- 
Rémy.