FELIX-3377 Applied patch provided by David Jencks (thanks alot) slightly modified:
  - Added some more JavaDoc to ExtComponentContext
  - Have ExtComponentContext extend ComponentContext
  - Internally tread property overwrites like supplied CM configuration
    This allows for properly transient property modification instead
    of overwriting the actual descriptor properties which would cause
    the properties for all instances created from the same descriptor
    to be subsequently modified.

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1298275 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/scr/src/test/resources/integration_test_mutable_properties.xml b/scr/src/test/resources/integration_test_mutable_properties.xml
new file mode 100644
index 0000000..5dc0473
--- /dev/null
+++ b/scr/src/test/resources/integration_test_mutable_properties.xml
@@ -0,0 +1,36 @@
+<?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.
+-->
+<components>
+    <scr:component name="components.mutable.properties"
+            xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0"
+            enabled="true"
+            configuration-policy="optional"
+            activate="activate"
+            modified="modified">
+        <implementation class="org.apache.felix.scr.integration.components.MutatingServiceImpl" />
+        <service>
+            <provide interface="org.apache.felix.scr.integration.components.MutatingService" />
+        </service>
+        <property name="service.pid" value="components.mutable.properties" />
+        <property name="theValue" value="otherValue" />
+        <property name="p1" value="p1" />
+        <property name="p2" value="p2" />
+    </scr:component>
+</components>