see https://github.com/Reference-LAPACK/lapack/issues/333

Fix argument in SLASET call to zero S

fixes #1859 in accordance with https://github.com/LAPACK-Reference/issue/296

for #1811

The problem is that OpenBLAS sets the LAPACKE_LIB and the TMGLIB to the
same object and uses the `ar` feature to update the archive file. If the
underlying filesystem does not have sub-second timestamp resolution and
the system is fast enough (or `ccache` is used), the timestamp of the
builds which should be added to the previously generated archive is the
same as the archive file itself and therefore `make` does not update the
archive.

Since OpenBLAS takes care to not run the different targets updating the
archive in parallel, the easiest solution is to declare the respective
targets `.PHONY`, forcing `make` to always update them.

fixes #1682

Remove an unused variable from several LAPACKE 2stage_work functions

Copied from Reference-LAPACK PR283

Copied from Reference-LAPACK PR283

Copied from Reference-LAPACK PR283

This could cause spurious "parameter has an illegal value" errors in DSYEVR and related routines, see https://github.com/Reference-LAPACK/lapack/issues/262

Fixes from Lapack-Reference PR 253

When minimal workspace is given in ?hesv_aa, ?sysv_aa, ?hesv_aa_2stage, ?sysv_aa_2stage, now no error is given
Quick return for ?laqr1

LAPACKE interfaces for Aasen's functions now call ?sytrf_aa and ?hetrf_aa instead of ?sytrf and ?hetrf

should fix 1574

LAPACKE fixes from lapack PR249

Copied from Reference-LAPACK/lapack#249, this fixes out-of-bounds memory accesses
in the nancheck calls of the LAPACKE lacgv, lassq,larfg,larfb,larfx and mtr functions

To allow compiling with gcc versions older than 4.9

This was added in #1046 citing a problem with mingw, but in effect it quietly reduces thread safety on all non-Windows platforms (while -fopenmp is already disabled for Windows builds through the toplevel Makefile.system). Removing the filter fixes #1425

From Reference-LAPACK issue 228, remove spurious EXTERNAL reference to unused and nonexistent function xLACGV that could cause linking problems.

The macOS ar aborts when it gets called with no input, see #1398