changes: bugfixes and portability improvements
only on Linux) -- the bundled ones are not consistent wrt some prefix (freeassociation.sourceforge.net vs citadel.org) which triggers a runtime check when imported ical files are used, bump PKGREVISION
changes: fixes from evolution pkgsrc change: pull in a portability patch from evolution-data-server, depend on zone.tab
an implementation of iCalendar protocols and data formats.
