Fix for Python library path problem

[Eric S. Raymond]

I've pushed a fix for Fred Wright's FixConfig class that seems to
solve the problem of incorrect Python library locations.

I tested it with no --prefix option and with --prefix=/usr,
using install --destdir=/tmp/ntp.

Gary, please verify that this addresses your FHS concerns.

Fred, please tell me if you think this is broken in some obscure way.
--
		<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>

My work is funded by the Internet Civil Engineering Institute: https://icei.org
Please visit their site and donate: the civilization you save might be your own.