Cython distribution in CING fails to compile lib

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What steps will reproduce the problem?
1. When setting up cing, a Cython lib needs to be compiled with:
    python compile.py build_ext --inplace

Workaround (see http://code.google.com/p/cing/wiki/SetupCING)
- Install the one in macports
    py27-cython @0.20.1 python/py-cython
- Disable all references to Cython in $C/python/cing/cing.csh 
- refresh the shell settings 
- Recompile 
- Unit test execute as: python 
$CINGROOT/python/cing/Libs/cython/test/test_vector.py

Original issue reported on code.google.com by jurge...@gmail.com on 9 Apr 2014 at 1:13