[tracker] NMO: Readd nmo:VOIPCall for backward compatibility

[Jürg Billeter <juergbi src gnome org>]

commit 13316e7e202f76b11010a7d31a43491a1d2e25a8
Author: Jürg Billeter <j bitron ch>
Date:   Thu Nov 12 19:24:01 2009 +0100

    NMO: Readd nmo:VOIPCall for backward compatibility

 data/ontologies/34-nmo.ontology |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/data/ontologies/34-nmo.ontology b/data/ontologies/34-nmo.ontology
index 5de9272..4391811 100644
--- a/data/ontologies/34-nmo.ontology
+++ b/data/ontologies/34-nmo.ontology
@@ -67,6 +67,10 @@ nmo:TransientChannel a rdfs:Class ;
 nmo:Call a rdfs:Class ;
 	rdfs:subClassOf nmo:Message .
 
+# required for backward compatibility
+nmo:VOIPCall a rdfs:Class ;
+	rdfs:subClassOf nmo:Call .
+
 nmo:MailFolder a rdfs:Class ;
 	rdfs:subClassOf nfo:Folder .