Revision 730649

Some minor changes to make Savan compile/work with Axis2 SNAPSHOT:
* httpcore is not a dependency of axis2-kernel anymore -> use HttpStatus from httpclient instead.
* AxisEngine no longer has a constructor taking a ConfigurationContext parameter -> call AxisEngine#send in a static context (it was already static in Axis2 1.3).
* JUnit is no longer a dependency of axis2-kernel -> add it explicitly in scope test.
* The HTTP transport is no longer part of axis2-kernel -> set up a Maven profile that adds the required dependency if axis2.version is set to SNAPSHOT.