* cal-util/cal-component.c (cal_component_set_recurid): Allow
recur_id to be NULL to clear the recurrence id. (Based on a story
by JP on evolution-1-2-recurid-branch)
* gui/print.c: Remove unused gnome-print-copies.h #include
* pcs/query.c (query_new): Use g_object_weak_ref rather than
connecting to "destroy" (which doesn't actually exist on a
CalBackend)
(backend_destroyed_cb): Update prototype.
svn path=/trunk/; revision=19365