[rygel] server: Make ContentDirectoryError internal.

[Murray Cumming <murrayc src gnome org>]

commit 8dd596c55b8764f789c679c65c185ab635784e17
Author: Murray Cumming <murrayc openismus com>
Date:   Tue Sep 11 11:51:23 2012 +0200

    server: Make ContentDirectoryError internal.
    
    Because it is used by ContentDirectory, which is internal.
    
    This removes it from the librygel-server API documentation.

 src/librygel-server/rygel-content-directory.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/librygel-server/rygel-content-directory.vala b/src/librygel-server/rygel-content-directory.vala
index 8aed373..b6a07d5 100644
--- a/src/librygel-server/rygel-content-directory.vala
+++ b/src/librygel-server/rygel-content-directory.vala
@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2008 Zeeshan Ali <zeenix gmail com>.
  * Copyright (C) 2007 OpenedHand Ltd.
+ * Copyright (C) 2012 Intel Corporation.
  *
  * Author: Zeeshan Ali <zeenix gmail com>
  *         Jorn Baayen <jorn openedhand com>