Build

tests: modernize subprocess calls #4251

Job	Run time
fallback shared libraries	1m 35s
libnvme (debian, gcc, release)	53s
musl libc minimal static build on Debian	30s
make static	45s
cross (s390x)	42s
musl libc build on Debian	36s
cross (ppc64le)	41s
build libnvme and nvme-cli separately	41s
muon minimal static	37s
windows-msys2-ucrt64	1m 36s
musl libc build on Alpine	42s
cross (armhf)	41s
nvme-cli (debian, gcc, release)	58s
nvme-cli (fedora, gcc, debug)	49s
nvme-cli (debian, clang, release)	56s
nvme-cli (debian, gcc, debug)	49s
nvme-cli (debian, clang, debug)	53s
nvme-cli (fedora, gcc, release)	50s
nvme-cli (tumbleweed, clang, release)	58s
nvme-cli (tumbleweed, clang, debug)	50s
nvme-cli (tumbleweed, gcc, debug)	55s
nvme-cli (fedora, clang, debug)	46s
nvme-cli (tumbleweed, gcc, release)	1m 15s
nvme-cli (fedora, clang, release)	49s
	20m 47s

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