Restore some of slime-cl-indent's custom indentations

* slime-cl-indent.el (common-lisp-indent-function-1): fix
reference to undefined variable `containing-sexp'.
slime-fuzzy: use comint-filename-completion
Fix compiler warnings in slime.el.

* slime.el (slime-note.message): Move this and other slime-note
accessors up to avoid references before definition.