[RP] Bug - 'bloody strtok()' or 'unbind error message'

[Doug Kearns]

Problem: The error messages generated from cmd_unbind() are incorrect for
         key descriptions which include a modifier - only the first
         modifier is included in the message.

         unbind Esc    ->  "Esc unbound key"
         unbind C-Esc  ->  "C unbound key"

         This occurs because the 'keydesc' string is passed off to
         parse_keydesc() which uses strtok() and this is kind enough to
         modify the string.

Fix:     Trivial - I'll leave it up to you guys.

Regards,
Doug