Add a name for our system bundle and a felix specific extension bundle header (FELIX-30).

git-svn-id: https://svn.apache.org/repos/asf/incubator/felix/trunk@506746 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/framework/src/main/java/org/apache/felix/framework/util/FelixConstants.java b/framework/src/main/java/org/apache/felix/framework/util/FelixConstants.java
index f0a0993..bb5ab86 100644
--- a/framework/src/main/java/org/apache/felix/framework/util/FelixConstants.java
+++ b/framework/src/main/java/org/apache/felix/framework/util/FelixConstants.java
@@ -1,4 +1,4 @@
-/* 
+/*
  * 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
@@ -20,13 +20,14 @@
 
 public interface FelixConstants extends org.osgi.framework.Constants
 {
+    public static final String SYSTEM_BUNDLE_SYMBOLICNAME = "org.apache.felix.framework";
     // Framework constants and values.
     public static final String FRAMEWORK_VERSION_VALUE = "1.3";
     public static final String FRAMEWORK_VENDOR_VALUE = "Apache Software Foundation";
 
     // Framework constants and values.
     public static final String FELIX_VERSION_PROPERTY = "felix.version";
-    
+
     // Miscellaneous manifest constants.
     public static final String DIRECTIVE_SEPARATOR = ":=";
     public static final String ATTRIBUTE_SEPARATOR = "=";
@@ -60,4 +61,5 @@
 
     // Miscellaneous properties values.
     public static final String FAKE_URL_PROTOCOL_VALUE = "location:";
+    public static final String FELIX_EXTENSION_ACTIVATOR = "Felix-Activator";
 }
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