merge with origin, put unistd back the way it was

.gitignore

.gitmodules

Cargo.toml

cbindgen

common/Cargo.toml

common/src/lib.rs

fcntl/Cargo.toml

fcntl/build.rs

fcntl/cbindgen.toml

fcntl/src/lib.rs

include/stdbool.h

include/stdint.h

include/sys/types.h

src/lib.rs

tests/.gitignore

tests/Makefile

tests/write.c

unistd/Cargo.toml

unistd/build.rs

unistd/cbindgen.toml