Revert "circe-fixes: Remove bugfix for minibuffer (included in 24.3)"

This reverts commit e28ec5e3e8071538d4792b4303cd3d0d1a8ac641.

Emacs 24.3 is still not out ...
circe-use-cycle-completion: Default to nil.

Added a note about circe-fix-minibuffer.el to the docstring for
users who wish to use cycle completion in 24.2 and earlier.