travis: oniguruma from homebrew is crap, try to fix macOS build
travis: oniguruma from homebrew is crap, try to fix macOS build

Signed-off-by: Fabian Groffen <2c4829061e3ecacc1da315323749610b9ffaef65@gentoo.org>

grobian/carbon-c-relay,grobian/carbon-c-relay,grobian/carbon-c-relay