Since we cannot directly use qt_docs.prf since it contains
various Qt specific details, adapt it for use in Qt Creator.
This can then be used e.g. by plugins that are not part of the
Qt Creator repository.
Change-Id: I87511cad74cbcae5cb58087e9a9386130d635aa9
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
