Other slight problems with tcsh 5.19

[Otto J. Makela]

I've come up with a couple of other small problems with tcsh 5.19

* the filename correction is done at the wrong time.  I use variables like
  h, s, g to hold useful directory names.  When I do stuff like "mkdir $s/a"
  tcsh will complain about $s being unreadable (the mkdir will work, however)

  Suggested solution: change the filename analysis to happen after the
  variable name expansion.

* the filename correction does not recognize wildcards "?*[]" as such, but
  will offer corrections to (some?) filenames containing them

  Suggested solution: make the wildcards patterns be a special case, the only
  time correction should be suggested is when no match is found.
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