+clipboard ideas:
+----------------------------
+option 1) use gtkclipboard for pasting what we can; use internal clipboard
+ for viking data. viking data isn't useful to other programs.
+
+option 2) use gtkclipboard for viking data. if I try to paste viking data as
+ text, this can do something useful, depending on the layer. it can
+ paste as GPX if you copy a track, waypoint, or whole viktrwlayer.
+ other layers? maplayer? georeflayer (world file)? paste a track as
+ an image, past a waypoint as coordinates to plug into geocaching.com,
+ ideas?
+