Preparation for setting bookmarks in Gnus article buffers (Bug#5975).

Preparation for setting bookmarks in Gnus article buffers (Bug#5975).

* lisp/bookmark.el (bookmark-make-record-default): Allow unneeded
  information to be omitted from the record.

Adjust declarations and calls:

* lisp/info.el (bookmark-make-record-default): Adjust declaration.
  (Info-bookmark-make-record): Adjust call.

* lisp/woman.el (bookmark-make-record-default): Adjust declaration.
  (woman-bookmark-make-record): Adjust call.

* lisp/man.el (bookmark-make-record-default): Adjust declaration.
  (Man-bookmark-make-record): Adjust call.

* lisp/image-mode.el (bookmark-make-record-default): Adjust declaration.

* lisp/doc-view.el (bookmark-make-record-default): Adjust declaration.

* lisp/gnus/gnus-sum.el (bookmark-make-record-default): Adjust declaration.