scsh 0.5.1: constant-glob? third branch

[Gary Houston <ghouston@actrix.gen.nz>]

Interestingly Scheme48 doesn't complain about:

(if #f 'yes 'no 'maybe)

glob.scm takes advantage of this, presumably inadvertently:

--- glob.scm~   Sat Oct 14 03:33:35 1995
+++ glob.scm    Thu Aug 28 08:07:38 1997
@@ -142,8 +142,7 @@
                (case (string-ref pattern i)
                  ((#\* #\? #\[) #f)
                  ((#\\) (lp next-i #t))
-                 (else  (lp next-i #f)))
-               (lp next-i #f)))))))
+                 (else  (lp next-i #f)))))))))