FELIX-1434 Include service tracker as a private package for more independence

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@799591 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/metatype/pom.xml b/metatype/pom.xml
index 8d7734a..19512cb 100644
--- a/metatype/pom.xml
+++ b/metatype/pom.xml
@@ -73,7 +73,8 @@
                         </Export-Package>
                         <Private-Package>
                             org.apache.felix.metatype.internal,
-                            org.apache.felix.metatype.internal.l10n
+                            org.apache.felix.metatype.internal.l10n,
+                            org.osgi.util.tracker
                         </Private-Package>
                         <Bundle-Activator>
                             org.apache.felix.metatype.internal.Activator