Cherrypick upstream git commit to make it work on !linux, and add other
patches to fix some crashes (http://bugzilla.xfce.org/show_bug.cgi?id=7141)
Update dependencies and WANTLIB.
an older version of libical which is shipping in the orage tarball.
The header and the library are not compatible, some enum constants
don't match up. So orage could not read ical files correctly which
prevented e.g. appointments from showing up in the calendar.
Force inclusion of the ical headers which ship with orage to fix this.
"sure" landry@
