We really need to clean this up and allow parsing of grabs in conf.c
again. xkbcommon is now mandatory so we can fix all the input layers to
use it.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
The standard C/POSIX helpers are really ugly to use. This small helper
returns 0 on success, otherwise an error.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>