Michael Kuhn 1d8b77b600 xerces-c: Fix url (#5597) ...

The main location only carries the latest release, while all previous
(and current) ones are available at the archive location.

2017-10-04 10:25:31 -06:00

..

spack

xerces-c: Fix url (#5597)

2017-10-04 10:25:31 -06:00