[gegl] Fixed missing application license needed by plug-ins.

[Michael Henning <mhenning src gnome org>]

commit cd6c0851d23f2e50a0f4bc33bb3c3ab3b9aa22d8
Author: Florian Klemme <mail florianklemme de>
Date:   Thu Dec 18 07:23:36 2014 +0100

    Fixed missing application license needed by plug-ins.

 examples/hello-world.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/examples/hello-world.c b/examples/hello-world.c
index 1297aad..a5d162b 100644
--- a/examples/hello-world.c
+++ b/examples/hello-world.c
@@ -8,6 +8,11 @@ main (gint    argc,
 {
   gegl_init (&argc, &argv);  /* initialize the GEGL library */
 
+  /* license for this application, needed by fractal-explorer */
+  g_object_set (gegl_config (),
+                "application-license", "GPL3",
+                NULL);
+
   {
     /* instantiate a graph */
     GeglNode *gegl = gegl_node_new ();