Add a custom icon for the identify button

data/icons/Makefile.am

@@ -0,0 +1,17 @@
+SUBDIRS = 16x16 24x24 scalable
+
+gtk_update_icon_cache = gtk-update-icon-cache -f -t $(datadir)/icons/hicolor
+
+install-data-hook:
+	@-if test -z "$(DESTDIR)"; then					\
+		echo "Updating Gtk icon cache.";			\
+		$(gtk_update_icon_cache);				\
+	else								\
+		echo "*** Icon cache not updated. Remember to run:";	\
+		echo "***";						\
+		echo "***   $(gtk_update_icon_cache)";			\
+		echo "***";						\
+	fi
+
+uninstall-local:
+	-rm $(datadir)/icons/hicolor/icon-theme.cache