Multiple bugs in lisp-mode M-q on paragraphs within #|..|# comments

[Bob Rogers]

   Oops; I forgot to include one:

Fourth bug:

   7.  Move the point to the line before the paragraph numbered 1, and
type M-q.  Instead of filling, this line is deleted, and the following
message is produced:

        fill-delete-newlines: Invalid search bound (wrong side of point)

This, too, did not exist in 21.3.

                                        -- Bob