updated for version 7.3.134
Problem:    Drag-n-drop doesn't work in KDE Dolphin.
Solution:   Add GDK_ACTION_MOVE flag. (Florian Degner)
diff --git a/src/gui_gtk_x11.c b/src/gui_gtk_x11.c
index 5c6e831..0454afb 100644
--- a/src/gui_gtk_x11.c
+++ b/src/gui_gtk_x11.c
@@ -3094,7 +3094,7 @@
     gtk_drag_dest_set(gui.drawarea,
 		      GTK_DEST_DEFAULT_ALL,
 		      targets, n_targets,
-		      GDK_ACTION_COPY);
+		      GDK_ACTION_COPY | GDK_ACTION_MOVE);
 }
 
 /*