Cameron Smith a4a30de8a1 libconfig: add version 1.7.1 (#12324) ... * libconfig: add version 1.7.1 * move 1.7.1 above 1.6, latest version is preferred		2019-08-10 11:08:53 -05:00
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spack	libconfig: add version 1.7.1 (#12324)	2019-08-10 11:08:53 -05:00