Search for more python versions
Search for more python versions

The build fails with Python 3.6 on CentOS 7 since cmake 2.8.12 only knows of Python <=3.3

Luthaf/Chemharp,Luthaf/Chemharp,chemfiles/chemfiles,Luthaf/Chemharp,chemfiles/chemfiles,chemfiles/chemfiles,chemfiles/chemfiles