Fix test errors reported by cblas_cgemm & cblas_ctrmm

Fix 32 and 64bit builds on SPARC with SolarisStudio compilers

rebase

The file cgemm_kernel_8x4_msa.c holds the MSA optimization
codes of cblas_cgemm and cblas_ctrmm. It defines two
macros: CGEMM_SCALE_1X2 and CGEMM_TRMM_SCALE_1X2. The pc1
array index in the two macros should be 0 and 1.

Avoid concurrent inclusion of libgomp and libomp in clang+gfortran builds

Improve the performance of zasum and casum with AVX512 intrinsic

Fix 32bit x86 builds and add workaround for x86_64 miscompilations by gcc 4.6 (including our Travis setup)

link math lib on FreeBSD

POWER10: Update param.h

Increasing the values of DGEMM_DEFAULT_P and DGEMM_DEFAULT_Q helps
in improving performance ~10% for DGEMM.

POWER10:  Optimize dgemv_n

Handling as 4x8 with vector pairs gives better performance than
existing code in POWER10.

Restore RISCV entries accidentally trashed by my PR 3005

add Fujitsu compilers

Co-authored-by: Tomoki Karatsu <karatsu.spack@gmail.com>

Add -msse for x86 and silence build warning in getarch

ARM64 DYNAMIC_ARCH build fix for BSD/OSX

Ensure that all targets in a DYNAMIC_ARCH build on POWER use the same buffer size

Fix ambiguous ifdefs in tests for user-defined options in Makefiles