FELIX-667 : Add obr descriptor file provided by Clement Escoffier

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@787567 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/prefs/obr.xml b/prefs/obr.xml
new file mode 100644
index 0000000..d3d50e8
--- /dev/null
+++ b/prefs/obr.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+    
+    http://www.apache.org/licenses/LICENSE-2.0
+    
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+-->
+<obr>
+    <require extend="false" 
+             filter="(service=org.osgi.service.log.LogService)" 
+             multiple="false"
+             name="service"
+             optional="true">Import Service org.osgi.service.log.LogService</require>
+    <require extend="false" 
+             filter="(service=org.apache.felix.prefs.BackingStore)" 
+             multiple="false" 
+             name="service" 
+             optional="true">Import Service org.apache.felix.prefs.BackingStore</require>
+    <capability name="service">
+        <p n="service" v="org.osgi.service.prefs.PreferencesService"/>
+    </capability>
+</obr>
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