[slime-devel] small patch

Hi, the attached patch fixes a couple of small things: - expand-file-name in slime-start-lisp gives an error if directory is nill. I changed it to use default-directory if it's nill - update the places where slime-start-lisp is called since it has 4 arguments now. this is my first patch to slime, please be nice ;-) Pedro Kroger