Aggregate filters working, still ned to implement JNI code for the Context

git-svn-id: http://madara.googlecode.com/svn/trunk@1260 2850746a-f1c8-11dd-b507-8b4ecd5210be
Adding the C++ code to make aggregate filters work from java

git-svn-id: http://madara.googlecode.com/svn/trunk@1261 2850746a-f1c8-11dd-b507-8b4ecd5210be