Use artifact name as symbolic name.

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@576453 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/prefs/pom.xml b/prefs/pom.xml
index 502e149..a76e25b 100644
--- a/prefs/pom.xml
+++ b/prefs/pom.xml
@@ -66,6 +66,9 @@
                 <configuration>
                     <instructions>
                         <Bundle-Category>osgi</Bundle-Category>
+                        <Bundle-SymbolicName>
+                            ${artifactId}
+                        </Bundle-SymbolicName>
                         <Export-Package>
                             org.apache.felix.prefs,
                             org.osgi.service.prefs;version=1.1