[Evolution] Multi Calendar

["Arash Yadegarnia" <arash bluehome net>]

Hi...

I wonder if there is a way to support calendars other than gregorian.
You know calendars like Hijri (most arabic countries) and jalali (Persian)
are widely used all around the world. So it could be nice to make
Evolution multi calendar. But I think this shouldn't be easy due to the
data server's native single-calendar architucture (e-cal-time-util.c for
example).

Thanks.