Python 2.7 can find cairo libs but not Python 3.6

[D'Arcy Cain]

I just realized that my subject was backwards.  It's 2.7 that can find
the libs and 3.6 than cannot.  Just in case that makes a difference.

-- 
D'Arcy J.M. Cain
Vybe Networks Inc.
http://www.VybeNetworks.com/
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