Move unix-setlocale and friends to os.lisp?
As mentioned in #189 (closed) and #180 (closed), we will or have already moved some items from unix.lisp to os.lisp. A while back we added unix-setlocale
and friends. The functions call into our C routines instead of directly calling the unix functions.
Should we consider moving these to os.lisp too? This probably also means moving them from the unix package to the system package and renaming the functions to remove the "unix-" prefix.