[Lapack] CLAPACK thread safety issue

[Andrey Zholos]

Hello,

In CLAPACK 3.2.1 the functions slaln2_ and dlaln2_ use static 
variables called equiv_0 and equiv_1.  As far as I can tell these 
variables are intended to be automatic.  Removing the 'static' keyword 
fixes my multithreaded program in which dgeev_ was sometimes returning 
incorrect eigenvectors.

By the way, thank you for creating such a useful library.

Best,
Andrey