Unit tests

[damitha kumarage]

Hi all,

I have added a main test suite to test unit tests of all the modules at once in test/unit folder

https://svn.apache.org/repos/asf/webservices/axis2/trunk/c/xdocs/axis2_developer_guide.html

It is good if we all can maintain unit tests throughtout the development and
make all the tests pass before we commit the code

cheers
damitha