build

A couple of build related changes #3401

Job	Run time
cross (armhf)	50s
default (gcc, debug)	45s
cross (s390x)	53s
muon minimal static	35s
default (gcc, release)	53s
default (clang, release)	57s
default (clang, debug)	48s
cross (ppc64le)	51s
make static	40s
build libnvme and nvme-cli separately	45s
fallback shared libraries	-1s
	7m 56s

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