Log Message:
libatomic_ops: update to 7.6.14.

== [7.6.14] 2022-08-25 ==

* Add note to README that AO malloc code has same license as AO stack
* Adjust/reformat content of LICENSING.txt
* Avoid AO_stack_t to cross CPU cache line boundary
* Do not assume 'ordered except earlier write' for UWP/arm64
* Do not name GCC intrinsics as C11 ones in ChangeLog and configure
* Eliminate '-pedantic is not option that controls warnings' GCC-6.3 message
* Ensure result of AO_test_and_set is always AO_TS_CLEAR or AO_TS_SET
* Fix 'AO_malloc redefinition' MS VC warning caused by attributes mismatch
* Fix 'use of undeclared SIG_BLOCK' Clang error if -std=c89 on Cygwin
* Fix AO_compare_and_swap_full asm code for clang on sparc
* Fix a typo in comment of AO_stack_push_explicit_aux_release
* Fix code indentation in main() of test_stack.c
* Refine AO_UNIPROCESSOR macro description in configure
* Remove outdated comment about unsupported Win64 in atomic_ops_stack.h
* Repeat black list check on CAS fail in stack_push_explicit_aux_release