[PATCH] devel/release-checks.sh: made python version check work with python 3

[David Bremner]

Tomi Ollila <tomi.ollila at iki.fi> writes:

> This trivial change consists of just putting print() argument in
> parentheses.

Pushed. BTW, would it be a good thing or a bad one to take the python
binary name here from sh.config? Or just not worth the trouble?

d