Todd Gamblin 0331b08c64 Update externals to work with Python 3 ... - Update YAML version to support Python 3 - Python 3 support for ordereddict backport - Exclude Python3 YAML from version tests. - Vendor six into Spack. - Make Python version-check tests work with Python 3 - Add ability to add version check exceptions with '# nopyqver' line comments.		2017-03-31 13:40:41 -07:00
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spack	Update externals to work with Python 3	2017-03-31 13:40:41 -07:00