diary-lib.el diary-outlook* changes.

diary-lib.el diary-outlook* changes.

* lisp/calendar/diary-lib.el (diary-outlook-format-1): New function, so that
diary-outlook-formats can be sensitive to calendar-date-style.
(diary-outlook-formats): Simplify the default setting.
(diary-from-outlook-internal): Pass subject and body as arguments.
Use dolist rather than dotimes.  Don't save the diary buffer.
(diary-from-outlook-gnus, diary-from-outlook-rmail):
Pass subject and body as explicit arguments to the -internal function.