[libnotify] Add persistence server capability

[William Jon McCann <mccann src gnome org>]

commit 015131721cda41650b5afd2613ad7d359215825e
Author: William Jon McCann <jmccann redhat com>
Date:   Thu Oct 28 14:19:32 2010 -0400

    Add persistence server capability

 docs/notification-spec.xml |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/docs/notification-spec.xml b/docs/notification-spec.xml
index 9eb32f7..ccdc471 100644
--- a/docs/notification-spec.xml
+++ b/docs/notification-spec.xml
@@ -937,6 +937,18 @@
         </entry>
        </row>
        <row>
+        <entry><literal>"persistence"</literal></entry>
+        <entry>
+         The server supports persistence of notifications.
+         Notifications will be retained until they are acknowledged or
+         removed by the user or recalled by the sender.  The presence
+         of this capability allows clients to depend on the server to
+         ensure a notification is seen and eliminate the need for
+         the client to display a reminding function (such as a status
+         icon) of its own.
+        </entry>
+       </row>
+       <row>
         <entry><literal>"sound"</literal></entry>
         <entry>
          The server supports sounds on notifications. If returned, the