finish plugins porting to cmake
deal with obsolete headers, besides those mentioned in the CMake files
use system harfbuzz and clucene (optionally) and unbundle
make use of qstandarddirs and qcommandlineparser trought the codebase, e.g. moc
move phonon sources to 3rdparty, still, generate docs for it
do not rebuild phonon on prefix change
QT_MOC_CPP seems unused but checked for in two headers