Put war-jdk6 in a specific profile.

examples/ohloh-proxy/pom.xml

@@ -48,6 +48,15 @@
   <modules>
     <module>standalone</module>
     <module>war</module>
-    <module>war-jdk6</module>
   </modules>
+
+  <profiles>
+    <profile>
+      <id>jdk6</id>
+      <modules>
+        <module>war-jdk6</module>
+      </modules>
+    </profile>
+  </profiles>
+
 </project>