; cperl-mode.el: Eliminate cperl-font-lock-multiline

; cperl-mode.el: Eliminate cperl-font-lock-multiline

This undocumented variable was always set to t.  There was no
function to change the variable.

* lisp/progmodes/cperl-mode.el: Eliminate top-level variables
cperl-font-lock-multiline and cperl-font-lock-multiline-start.
(cperl-mode): Don't set cperl-font-lock-multiline.
(cperl-windowed-init): Don't set cperl-font-lock-multiline.
(cperl-init-faces): Eliminate (if cperl-font-lock-multiline)
conditionals.