Merge branch 'master' into master

.travis.yml

ci/cargo-config

ci/docker/aarch64-unknown-linux-gnu/Dockerfile

ci/docker/arm-linux-androideabi/Dockerfile

ci/docker/arm-unknown-linux-gnueabihf/Dockerfile

ci/docker/i686-unknown-linux-gnu/Dockerfile

ci/docker/mips-unknown-linux-gnu/Dockerfile

ci/docker/x86_64-rumprun-netbsd/Dockerfile

ci/docker/x86_64-unknown-freebsd/Dockerfile

ci/docker/x86_64-unknown-linux-gnu/Dockerfile

ci/docker/x86_64-unknown-linux-musl/Dockerfile

ci/docker/x86_64-unknown-openbsd/Dockerfile

ci/mips/Dockerfile

ci/rumprun/Dockerfile

ci/run-all.sh

ci/run-docker.sh

ci/run-qemu.sh

ci/run-travis.sh

ci/run.sh

src/unix/bsd/mod.rs