* swank-backend.lisp (arglist): export symbol
(*arglist-hooks*): add docstring
Fix slime-all-xrefs.

* slime.el (slime-all-xrefs): slime-next-line/not-add-newlines
doesn't error at end of buffer anymore, call forward-line directly
instead
* slime.el (slime-next-line/not-add-newlines): Delete unused function.