(cal-tex-hook, cal-tex-year-hook, cal-tex-month-hook)

(cal-tex-hook, cal-tex-year-hook, cal-tex-month-hook)
(cal-tex-week-hook, cal-tex-daily-hook): Add doc strings.

(cal-tex-latexify-list): Fix doc string.

(cal-tex-insert-day-names): LaTeXify day names.
(cal-tex-cursor-week-iso, cal-tex-week-hours, cal-tex-weekly4-box)
(cal-tex-cursor-filofax-2week, cal-tex-cursor-filofax-week)
(cal-tex-daily-page, cal-tex-mini-calendar): LaTeXify day names.

Change all instances (interactive "P") to (interactive "p").
(cal-tex-cursor-month): Add hfill and newline at end of month that
ended on Saturday.
(cal-tex-preamble): Change to LaTeX2e.
(cal-tex-cursor-filofax-year): Don't use default month names in
LaTeX macros in case user changes them.
(cal-tex-month-name): New function.  Used throughout in case user
has done something funny with month names.