Bug#919273: libblis2: BLAS alternative is broken

[Dave Love]

Package: libblis2
Version: 0.5.1-1
Severity: important

It doesn't work just to link libblis to libblas as a BLAS alternative
because the soname is wrong.  [The openblas package gets it right,
though in a heavyweight way as far as I remember.  The Fedora blis
packaging uses trivial shims
<https://src.fedoraproject.org/rpms/blis/blob/master/f/blis.spec>.]

-- System Information:
Debian Release: 9.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-debug'), (500, 'stable'), (50, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-8-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages libblis2 depends on:
ii  libblis2-openmp  0.5.1-1

libblis2 recommends no packages.

libblis2 suggests no packages.

-- no debconf information