Detecting OpenBSD and NetBSD (#1459) #1968

Job	Run time
Linux Clang Determinism Check	5s
Linux GCC Determinism Check	2m 1s
Visual Studio CL Determinism Check	3m 19s
ARM Clang Determinism Check	35s
ARM Clang 32-bit Determinism Check	20s
ARM GCC Determinism Check	7m 30s
Emscripten Determinism Check	3m 58s
LoongArch GCC Determinism Check	7m 44s
macOS Determinism Check	1m 43s
Visual Studio CL 32-bit Determinism Check	2m 47s
PowerPC Little Endian GCC Determinism Check	5m 6s
RISC-V GCC Determinism Check	6m 56s
	42m 4s

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