Revert the Java compiler configuration to 1.6

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1592396 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/ipojo/runtime/core-it/pom.xml b/ipojo/runtime/core-it/pom.xml
index 6dfb8e8..881a723 100644
--- a/ipojo/runtime/core-it/pom.xml
+++ b/ipojo/runtime/core-it/pom.xml
@@ -93,8 +93,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>2.5.1</version>
                 <configuration>
-                    <source>1.7</source>
-                    <target>1.7</target>
+                    <source>1.6</source>
+                    <target>1.6</target>
                 </configuration>
             </plugin>