Merge remote-tracking branch 'rustlang/master'

.travis.yml

CONTRIBUTING.md

Cargo.toml

README.md

appveyor.yml

ci/build.sh

ci/dox.sh

ci/landing-page-footer.html

ci/landing-page-head.html

ci/runtest-android.rs

ci/semver.sh

libc-test/Cargo.toml

libc-test/build.rs

libc-test/test/linux_fcntl.rs

libc-test/test/main.rs

src/cloudabi/mod.rs

src/dox.rs

src/fuchsia/align.rs

src/fuchsia/mod.rs

src/fuchsia/no_align.rs