Implement isatty

Cargo.lock

Cargo.toml

include/bits/sys/ioctl.h

src/dirent/src/lib.rs

src/lib.rs

src/platform/src/linux/mod.rs

src/sys_ioctl/Cargo.toml

src/sys_ioctl/build.rs

src/sys_ioctl/cbindgen.toml

src/sys_ioctl/src/lib.rs

src/sys_utsname/Cargo.toml

src/sys_utsname/src/lib.rs

src/unistd/Cargo.toml

src/unistd/src/lib.rs

tests/.gitignore

tests/Makefile

tests/expected/unistd/isatty.stderr

tests/expected/unistd/isatty.stdout

tests/unistd/isatty.c