Common Lisp pathname implementation fixes needed

[masinter]

(CL:DIRECTORY follows the convention that double asterisks ** corresponds to all depths and single asterisk * means one level. I think this is better than the horrible rebinding of IL:FILING.ENUMERATION.DEPTH.

It does mean that our two-level hack looking for level 2 might not be there, but I think we'd be better off.

[masinter]

Also, not quite related, is that the standard for pathnames is #p"/tmp" not #.(PATHNAME "/tmp") which is what it does currently.