Move utility macro from XKBcommonint.h to utils.h And merge all the similar ones into the same name. The u* prefix is chosen over the _Xkb prefix because it has more uses throughout the codebase. But It should now be simple to choose a nice prefix and stay consistent. Signed-off-by: Ran Benita <ran234@gmail.com> [daniels: fixed for the case where we have strcasecmp]