build

fabrics: fix concat during connect-all #3590

Job	Run time
libnvme (gcc, release)	42s
make static	39s
libnvme (clang, release)	43s
cross (armhf)	50s
libnvme (clang, debug)	45s
nvme-cli (gcc, release)	54s
muon minimal static	38s
cross (s390x)	45s
nvme-cli (gcc, debug)	46s
nvme-cli (clang, debug)	46s
libnvme (gcc, debug)	40s
build libnvme and nvme-cli separately	38s
nvme-cli (clang, release)	56s
cross (ppc64le)	50s
fallback shared libraries	0s
	10m 32s

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