Some doc fixes, eliminate (require cl).

Some doc fixes, eliminate (require cl).
(ps-print-version): New version number (3.06.1) and doc fix.
(ps-print-control-characters, ps-extend-face): Doc fix.
(ps-font-lock-face-attributes): Eliminate `pop'.
(ps-font): Eliminate `loop' and `return'.
(ps-fonts): Eliminate `loop'.
(ps-font-number): Replace `position' by `ps-position'.
(ps-select-font): Eliminate `flet'.
(ps-lookup, ps-size-scale): New macros.
(ps-output-string-prim): Handle multibyte characters.
(ps-position): New function.
(ps-begin-file): Eliminate `loop'.
(ps-header-page): Eliminate `incf'.