Use QByteArray as default payload and remove Item::data()/Item::setData().
Use QByteArray as default payload and remove Item::data()/Item::setData().

svn path=/trunk/KDE/kdepim/akonadi/server/; revision=657096

kolab-groupware/akonadi,kolab-groupware/akonadi,kolab-groupware/akonadi,kolab-groupware/akonadi