[gimp] libgimp: update gimp.def.

[Jehan <jehanp src gnome org>]

commit ebc797a64ea50d9a4f2de75978862bc4253d2a20
Author: Jehan <jehan girinstud io>
Date:   Sun Jul 28 20:02:40 2019 +0200

    libgimp: update gimp.def.
    
    How come I always forget this so annoying file?!

 libgimp/gimp.def | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/libgimp/gimp.def b/libgimp/gimp.def
index 6d04d221e1..b8e08784d3 100644
--- a/libgimp/gimp.def
+++ b/libgimp/gimp.def
@@ -586,6 +586,12 @@ EXPORTS
        gimp_param_channel_id_get_type
        gimp_param_display_id_get_type
        gimp_param_drawable_id_get_type
+       gimp_param_from_int32
+       gimp_param_from_status
+       gimp_param_from_string
+       gimp_param_get_int32
+       gimp_param_get_status
+       gimp_param_get_string
        gimp_param_image_id_get_type
        gimp_param_item_id_get_type
        gimp_param_layer_id_get_type