Try to support Qt 4.4-style Phonon includes in Qt.
This introduces an undocumented "phonon_compat" subdir and also adds
it to the INCLUDEPATH when QT += phonon is specified. With this, these
styles of #includes should be supported:
#include <Phonon>
#include <Phonon/Phonon>
#include <phonon>
#include <phonon/phonon>
#include <Phonon/MediaObject>
#include <phonon/mediaobject.h>
Still need to check if the headers get installed during "make
install". I couldn't find where in our code that is done.
BT: yes
Reviewed-By: Trust Me