MOD: optimize zgemm on cortex-A53/cortex-A55

Add/restore a GENERIC target for MIPS32 and support MIPS32 cross-compilation using CMAKE

* Fetch alpine-chroot-install from master to get key updates

MOD: optimize DGEMM of large matrices on cortex A53 & A55

cmake: Set SUFFIX64 also for NOFORTRAN

Fix MIPS/MIPS64 compilation querying compiler rather than cpu for MSA capability

Fix potentially wrong HOSTARCH definition in cross-compilation

Fix NULL pointer checks in blas_memory_alloc

Fix exported OpenBLASTargets.cmake

Add CPUID recognition of Intel Alder Lake

Adjust compiler options for nvc after 21.9 (and fix typo in DYNAMIC_ARCH settings)

Fix flipped indices in benchmark for gemv

*  return OMP places (if available, or SC_NPROCESSORS_CONF) for maximum thread count when built with OpenMP

Fixes #3439

cpuid_zarch/hwcaps: add documentation and dump hwcaps in init

Add cblas_{c/z}srot cblas_{c/z}rotg support

When both BUILD_SHARED_LIBS and BUILD_STATIC_LIBS are enabled,
cmake export both of them to OpenBLASTargets under tha same name `OpenBLAS::OpenBLAS`
which leads to fatal error about OpenBLAS::OpenBLAS being both static and shared target.
This change makes cmake export only the shared library in that case.
There is another solution to treat them as components,
but I am afraid that will make it backward incompatible.