Fixed some trivial compiler warnings

* tests/interactive/test-pixmap.c (create_pixmap): Use a format
	string instead of passing the error message directly to g_error.

	* tests/interactive/test-easing.c (test_easing_main)
	(on_button_press):
	* tests/interactive/test-animation.c (on_button_press): Use
	unsigned variables for the results from clutter_actor_get_size
	otherwise it complains about the pointer signedness being
	different.

	* clutter/clutter-script.c (clutter_script_add_search_paths): Use
	G_GSIZE_FORMAT instead of %d for a gsize parameter otherwise it
	gets upset on 64-bit.

tests/interactive/test-pixmap.c

@@ -94,7 +94,7 @@ create_pixmap (guint *width, guint *height, guint *depth)
 
   pixbuf = gdk_pixbuf_new_from_file (IMAGE, &error);
   if (error)
-    g_error (error->message);
+    g_error ("%s", error->message);
 
   /* We assume that the image had an alpha channel */
   g_assert (gdk_pixbuf_get_has_alpha (pixbuf));