Trac #15442: MILP solver CBC  : undefined symbol: dgetrf_

As reported by Thierry Monteil :

{{{
sage: graphs.PetersenGraph().dominating_set(solver="Coin",verbose=2)
ImportError: /home/ncohen/.Sage/local/lib/libCoinUtils.so.3: undefined
symbol: dgetrf_
}}}

Looks like {{{dgetrf}}} is defined in LAPACK. I added it to the
dependencies and it now works. No idea why it changed, and in particular
I'll be quite happy to see all optional packages automatically tested at
each release `:-P`

Nathann

URL: http://trac.sagemath.org/15442
Reported by: ncohen
Ticket author(s): Nathann Cohen
Reviewer(s): Thierry Monteil