Build

Set/update SPDX and Copyright statements #3886

Job	Run time
nvme-cli (gcc, debug)	48s
nvme-cli (gcc, release)	56s
cross (ppc64le)	42s
nvme-cli (clang, debug)	50s
muon minimal static	40s
libnvme (clang, release)	47s
cross (armhf)	49s
libnvme (gcc, debug)	49s
cross (s390x)	47s
musl libc build on Alpine	43s
nvme-cli (clang, release)	59s
libnvme (clang, debug)	45s
make static	38s
musl libc build on Debian	32s
libnvme (gcc, release)	45s
build libnvme and nvme-cli separately	40s
fallback shared libraries	0s
	12m 10s

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