[gegl] hide ParamSpecFormat from vapigen

[Daniel Sabo <daniels src gnome org>]

commit d0aa87357c947cf8633a7053fc271432cbfa8e6f
Author: Daniel Sabo <DanielSabo gmail com>
Date:   Fri Oct 4 21:00:18 2013 -0700

    hide ParamSpecFormat from vapigen
    
    Vala 0.20 seems to be missing GObject.ParamSpecPointer, which
    this class depends on.

 gegl/Gegl.metadata.in |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/gegl/Gegl.metadata.in b/gegl/Gegl.metadata.in
index 364070e..fb9e79d 100644
--- a/gegl/Gegl.metadata.in
+++ b/gegl/Gegl.metadata.in
@@ -1,2 +1,4 @@
 Gegl cheader_filename="gegl.h"
-module_register_type skip
+ParamSpecFormat skip
+ParamFormat skip
+param_spec_format skip
\ No newline at end of file