[gegl] clone: update description

[Øyvind Kolås <ok src gnome org>]

commit 5839a8b8ddaf3e77a93cc19b52f322b3c80d0d56
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri May 5 14:55:25 2017 +0200

    clone: update description

 operations/core/clone.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/core/clone.c b/operations/core/clone.c
index 30f532a..9961fb2 100644
--- a/operations/core/clone.c
+++ b/operations/core/clone.c
@@ -108,7 +108,7 @@ gegl_op_class_init (GeglOpClass *klass)
   gegl_operation_class_set_keys (operation_class,
        "name",          "gegl:clone",
        "title",         _("Clone"),
-       "description",   _("Clone a buffer"),
+       "description",   _("Clone a buffer, this is the same as gegl:nop but can get special treatment to get 
more human readable references in serializations/UI."),
        "categories",    "core",
        NULL);
 }