Integrated the OMNavigator code directly into SwitchingWrapper. This is necessary to simplify the code and prepare future changes. The refactoring has been done in the most direct way; this will be gradually cleaned up.

Also removed the test cases that directly test OMNavigator. We should already have enough coverage generated by the getXMLStreamReader tests.


git-svn-id: https://svn.apache.org/repos/asf/webservices/commons/trunk/modules/axiom@1433009 13f79535-47bb-0310-9956-ffa450edef68