Atlas is great in the platforms where it's available, however
it is not being packaged (for good reasons) anymore. arpack
originally used blas for testing and since we are not really
linking any version of blas in the package it doesn't make
any difference what we use. It seems better idea to use
blas for testing since it's faster to build and because
this also means we can package arpack without building
ATLAS, The resulting package will work with BLAs or ATLAS
just the same and in any case the BLAS_LIBS variable can
now be overridden to test with atlas if it's so desired.
This change doesn't change the package so I think we should
leave the PORTVERSION untouched.
PR: ports/91251
Submitted by: Pedro F. Giffuni <giffunip@asme.org>
