Merge branch 'master' of https://github.com/redox-os/relibc

tests/expected/printf.stdout

tests/expected/rmdir.stderr

tests/expected/rmdir.stdout

tests/expected/write.stderr

tests/expected/write.stdout

tests/fcntl

tests/link.c

tests/rmdir.c

tests/setid.c

tests/stdlib/strtol.c

tests/unlink.c

va_list