Build

python, swig: fix bugs and restore Python ergonomics after libnvmf_context refactor #4349

Job	Run time
make static	43s
build libnvme and nvme-cli separately	42s
musl libc build on Alpine	39s
muon minimal static	33s
musl libc build on Debian	33s
windows-msys2-ucrt64	1m 52s
libnvme (debian, gcc, release)	56s
musl libc minimal static build on Debian	34s
cross (s390x)	42s
cross (armhf)	43s
cross (ppc64le)	51s
nvme-cli (debian, gcc, release)	58s
nvme-cli (tumbleweed, gcc, release)	1m 12s
nvme-cli (tumbleweed, clang, release)	1m 0s
nvme-cli (debian, clang, debug)	54s
nvme-cli (fedora, gcc, debug)	45s
nvme-cli (tumbleweed, gcc, debug)	51s
nvme-cli (fedora, clang, debug)	42s
nvme-cli (tumbleweed, clang, debug)	56s
nvme-cli (fedora, clang, release)	54s
nvme-cli (debian, clang, release)	1m 3s
nvme-cli (debian, gcc, debug)	51s
nvme-cli (fedora, gcc, release)	54s
fallback shared libraries	-1s
	19m 47s

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