The cmake scripts incorrectly treated armv8 as 32-bit arm, causing
compilation issues. This just adds 'armv8' to the arm64 condition check.

Update from develop for 0.3.15 release

Update Changelog for 0.3.15

Add new Householder Reconstruction functions from LAPACK 3.9.1

rebase

Avoid allocating the transposed triangular matrix in LAPACKE_xlantr_work (Reference-LAPACK 382)

Initialize X and Y to zero for N=0 in xGGGLM (Reference-LAPACK PR463)

Handle norm NaN value in xGESDD (Reference LAPACK PR471)

Fix possible division by zero in LAPACK xTGSJA (Reference-LAPACK PR502)

Apply MKL team fixes to the LAPACKE interfaces (Reference-LAPACK PR 534)

Add casts to prevent overflow of intermediate results

Removed spurious checks for INFO in xLACPY,xLASET after routines not returning any,and redundant requirements for ldvt in xGESVD_WORK

x86: Enable Intel CET

When Intel CET is enabled, we need to include <cet.h> in assembly codes
to mark Intel CET support and place _CET_ENDBR at the function entry.

Import packing improvements to LAPACK xLAQR from Reference-LAPACK (PR 480+535)

rebase

Correct INFO value returned by SLASQ2/DLASQ2 (Reference-LAPACK 506)

Fix division by zero in the non-x86 codepath of C/ZROTG

Add LAPACKE fixes from Reference-LAPACK PR 537

Apply fixes from Reference-LAPACK PR468 and 539 for array declarations in ?ORGBR/?UNGBR

Apply lapack-testing fix from Reference-LAPACK PR536

fixes changing back from a single OMP thread for error exit testing to the originally requested number of threads for computational tests

Apply lapack-testing fixes from Reference-LAPACK PR538

Delay creation of the (soft)link until after the library has been built

Replace spurious AVX512 requirement in the Haswell drot microkernel with an AVX2/FMA3 guard