riscv64 fixes

The implementation in `riscv64/dot.c` fails the `test_dsdot` test, and
the generic kernel seems to have better precision. Tested on SiFive
FU740 (HiFive Unmatched) and QEMU.

Also see #1469.

Same as #1990.

revert "try to work around gcc update problems" in Homebrew workflow

...as homebrew has dropped at least gcc8 now

Fix typo

Add fast path for small xSYR with INCX==1

Fix spurious error exit test failures in the ?chktsqr tests (LAPACK564)

GEMM: skylake: improve the performance when m is small

Handle inadvertent use of DYNAMIC_ARCH=0

optimize on sgemv_n for small n

Correct function name in error message from SLASQ2 (LAPACK PR555)

Add -lm for FreeBSD on ARM/ARM64

Update Makefile.arm64

Added -march and -mtune flags for EMAG processors when GCC 9 or later

filter out -mavx flag on Sandybridge zgemm/ztrmm kernels

Add autodetection for Intel Ice Lake SP

Reduce stack size requirements in the LAPACK LIN tests (LAPACK PR 553)

Support compilation with pre-C99 versions of MSVC

Update the intrinsic api to the offical name.

* Add an Android crossbuild on OSX

Use percent instead of ampersand as placeholder for substitutions

Add error message token for SBGEMM in gemm.c

Delete lapack_wrappers.c.orig

This looks like a leftover from patching and confuses further patching;-)