Build

fixes and improvements for nvme_copy_test #4423

Job	Run time
cross (s390x)	43s
build libnvme and nvme-cli separately	42s
make static	43s
cross (ppc64le)	50s
libnvme (debian, gcc, release)	53s
cross (armhf)	40s
muon minimal static	32s
musl libc build on Alpine	35s
musl libc build on Debian	34s
musl libc minimal static build on Debian	27s
windows-msys2-ucrt64	1m 49s
nvme-cli (fedora, gcc, debug)	47s
nvme-cli (tumbleweed, clang, debug)	1m 0s
nvme-cli (fedora, clang, debug)	49s
nvme-cli (tumbleweed, clang, release)	1m 0s
nvme-cli (fedora, clang, release)	53s
nvme-cli (debian, gcc, debug)	53s
nvme-cli (debian, gcc, release)	1m 3s
nvme-cli (debian, clang, release)	1m 4s
nvme-cli (tumbleweed, gcc, debug)	53s
nvme-cli (fedora, gcc, release)	1m 9s
nvme-cli (tumbleweed, gcc, release)	1m 28s
nvme-cli (debian, clang, debug)	55s
fallback shared libraries	0s
	20m 22s

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