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pfg
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2019-04-19T20:18:05.596419Z
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V 362
math/taucs: change metis4 dependency to metis.

We don't ship metis4 due to license concerns. Use metis 5 instead as it
is reported to work fine and it passes the same tests as the previous
version.

Use the BSD/darwin memory detection code although we still don't pass
the corresponding test.

Pet portlint while here.

PR:	234141
Approved by:	thierry (mentor)

END