Craig Markwardt <Craig.Markwardt at nasa.gov>

Craig Markwardt  <Craig.Markwardt at nasa.gov>

(icalendar-recurring-start-year): New variable.
(icalendar--diarytime-to-isotime): Fix treatment of 12:00pm - 12:59pm.
(icalendar-export-region): Ignore hidden diary entries.
(icalendar--convert-ordinary-to-ical): Fix case where event
spans across midnight boundary.
(icalendar-first-weekday-of-year): New function.
(icalendar--convert-weekly-to-ical): Allow user-selectable start
year for recurring events (Mozilla calendars do not propagate
recurring events forever, so year 2000 start date was not working).
(icalendar--convert-yearly-to-ical): Remove extra spaces in
formatting of BYMONTH and BYMONTHDAY (not allowed by ical spec).