Bug#697235: openblas: bad cpu detection on amd64 if cpuid unknown

[Julian Taylor]

Package: openblas
Version: 0.1.1-6
Severity: normal
Tags: fixed-upstream

if the cpuid is unknown (e.g. a qemu virtual cpu) the cpu detection
falls back to very old cpus even on amd64, this leads to very bad
performance.

upstream an additional check was added for the case of an unknown cpuid:
https://github.com/xianyi/OpenBLAS/pull/169