Build

fixes and improvements for nvme_copy_test #4421

Job	Run time
cross (s390x)	49s
nvme-cli (fedora, gcc, debug)	48s
nvme-cli (debian, gcc, debug)	1m 2s
make static	53s
nvme-cli (debian, clang, debug)	58s
musl libc minimal static build on Debian	43s
musl libc build on Alpine	41s
cross (ppc64le)	40s
windows-msys2-ucrt64	1m 44s
nvme-cli (debian, gcc, release)	1m 10s
nvme-cli (fedora, clang, release)	51s
nvme-cli (debian, clang, release)	1m 6s
nvme-cli (tumbleweed, clang, release)	1m 0s
nvme-cli (fedora, clang, debug)	55s
nvme-cli (tumbleweed, clang, debug)	50s
libnvme (debian, gcc, release)	51s
nvme-cli (fedora, gcc, release)	59s
nvme-cli (tumbleweed, gcc, release)	1m 20s
musl libc build on Debian	38s
nvme-cli (tumbleweed, gcc, debug)	50s
muon minimal static	33s
cross (armhf)	43s
build libnvme and nvme-cli separately	50s
fallback shared libraries	-7s
	20m 47s

Provide feedback