ALLJOYN-1890 Add PropertyChanged code to the C bindings

Most of the work to add the PropertyChanged code was already done.  However no
unit test had been written for the code changes and the function
alljoyn_busobject_emitpropertychanged signal did not match the naming
used for other function names.

Most of the alljoyn_buslistener_callbacks only listed 7 callback functions when
they should have listed 8.  That has been fixed.

Unit test added to test the property changed listener.

Change-Id: I436ed3f006ffe00b9004b9f5dbb0ab6a12296eb3
ALLJOYN-1881 Add FindAdvertisedNameByTransport and CancelFindAdvertisedNameByTransport to C bindings.

Change-Id: Ic03fe28ebfba30d0e3fc953a390f08e1ad634760