to fix fault found by the restored swap utest

seems to hang on at least ARMv8/Android as well

test_fork is not meant to be run (nor expected to work) with OpenMP

Fixes 1456

Keep the flag handling separate from the scaling loops in rotmg

Enable assembly kernels for the generic ARMV8 target and treat CortexA53,A72 as A57

Fixes #1452 and is more in line with how ATLAS does it. The earlier fix from #356 only moved the bug elsewhere, but we will never want the iterative rescaling to change the dflag setting and variable associations with each cycle.

Remove spurious EXTERNAL reference

Fix issues with forking on Cygwin

From Reference-LAPACK issue 228, remove spurious EXTERNAL reference to unused and nonexistent function xLACGV that could cause linking problems.

Even if we're directly using the win32 threading driver and not pthreads,
pthread_atfork still works fine to register a pre-fork handler, and is
necessary to restore the threading server to a pre-initialized state.

ref #1439

Generate CHAR_CORENAME for SPARC

small fix inside ifdef z13mvc . (z13mvc code is not used in production)

Also #define SPARC in config.h when autodetecting

small corrections

Initialize unitialized values for repeated calls