Make setup.py string formatting Py 3.4 compatible
Make setup.py string formatting Py 3.4 compatible

Two logging commands in setup.py were using f-string interpolation,
which was only introduced in Python 3.6 and was therefore causing the
AppVeyor Windows Python 3.4 build to error. (The Linux and Mac Python
3.4 builds were OK, presumably because those particular logging
commands happen not to be executed on those platforms.)

This commit replaces the f-strings in setup.py with old-style, Python
3.4 compatible, "%s" interpolation.

bcdev/jpy,bcdev/jpy,bcdev/jpy,bcdev/jpy,bcdev/jpy