Add Extension-Name for Glassfish
diff --git a/META-INF/MANIFEST.MF b/META-INF/MANIFEST.MF
index aa78496..27f268d 100644
--- a/META-INF/MANIFEST.MF
+++ b/META-INF/MANIFEST.MF
@@ -20,4 +20,5 @@
  org.osgi.service.jpa;version="1.0.100"
 Specification-Version: 2.1 Draft 13
 Bundle-SymbolicName: javax.persistence-api
+Extension-Name: javax.persistence