Added gMock matchers for matching xmlNodePtr and its attributes. Clean up mpd_unittests to make it easier to separate adaptation set tests and representation tests. Change-Id: I31816b06e9c76f92d4a82656c659f3b9acae8cb5
Issue #103 Change-Id: I67945c8ec6d2c178494d3b5400e5ec0170e9d115
Make it easier to be included and integrated into other code. Change-Id: I609881688cc20f8fac676cbd91fde4753af32ee5