merge develop in preparation of the 0.3.28 release

Update Changelog.txt for 0.3.28

Disable forwarding from SBGEMM to SBGEMV for now

Fix invocation of GEMM3M tests in gmake builds

Make the dummy GEMM3M kernel for GENERIC targets forward to regular GEMM for now

Temporarily revert to the coarse-grained locking in the Windows thread server

Make the type used for the "hidden" string length argument configurable (adapted from Reference-LAPACK PR 1025)

Prevent compilers from using FMA that could increase error in ?GEEVX (Reference-LAPACK PR 1033)

Fix typos and sytrd boundary workspace (Reference-LAPACK PR 1030)

set MACOSX_RPATH to true on Apple

Add proper returns in x86_64 s/dscal kernels

use TARGET rather than CORE from Makefile.conf_last to fill in pkgconfig

fix invalid ifdef syntax in HUGETLB handling

Add CMAKE support for RISCV64 DYNAMIC_ARCH

Enable forwarding from GEMM to GEMV for RISCV and PPC in addition to ARM64

Forward GEMM to GEMV when one argument is actually a vector

* handle INF and NAN in input (for S/D only if DUMMY2 argument is set)

This helps to reduce values going missing as we accumulate.

Continue requesting ubuntu18 instead of latest on OSUOSL powerCI