Merge branch 'fix/kill-useless-dummy.f' into 'master'

[fmatrixtest] Drop dummy.f.

I have no idea why `fmatrixtest` compiled and linked `dummy.f`, and it made
compilation fail in the absence of gfortran.

[DONE] Check that linking against a static liblapack still works. (`fmatrixtest` simply does not seem to need lapack)

Planned merge: 2016-11-26


See merge request !178