2.0.0-rc4

Changelog

b52afd6 Added rpm to build, well, rpms
f30bd77 Transitioned to different go base to try to head off problems with dynamically linked go binaries
cbc4d38 tweaking some build flags
5f2652f tweaking CGO
b9480fa messing with ldflags

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Built with go version go1.9.2 linux/amd64