Fix to build with python2 by default
Fix to build with python2 by default

I used python2.7 first, however after looking through issue #104 and the python2.patch I switched using python2 instead because python2 seems to be more generic.

s2x/ctemplate,s2x/ctemplate,OlafvdSpek/ctemplate,OlafvdSpek/ctemplate,OlafvdSpek/ctemplate,s2x/ctemplate,OlafvdSpek/ctemplate,OlafvdSpek/ctemplate,s2x/ctemplate,OlafvdSpek/ctemplate,s2x/ctemplate,s2x/ctemplate