build

nvme: retry commands on EAGAIN and EINTR #3000

Job	Run time
cross (s390x)	49s
default (gcc, release)	40s
cross (ppc64le)	44s
cross (armhf)	52s
default (clang, debug)	31s
default (clang, release)	32s
muon minimal static	34s
make static	1m 23s
default (gcc, debug)	30s
build libnvme and nvme-cli separately	41s
fallback shared libraries	1m 32s
	8m 48s

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