DBusProxy and subclasses: don't store a pointer to parent
DBusProxy and subclasses: don't store a pointer to parent

This turns out to be unnecessary for these classes.

Also re-indent initializers.

freedesktop-unofficial-mirror/telepathy__telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt4,TelepathyIM/telepathy-qt,TelepathyQt/telepathy-qt,TelepathyIM/telepathy-qt,detrout/telepathy-qt,special/telepathy-qt-upstream,special/telepathy-qt-upstream,anantkamath/telepathy-qt,tiagosh/telepathy-qt,TelepathyQt/telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt,tiagosh/telepathy-qt,tiagosh/telepathy-qt,TelepathyIM/telepathy-qt,detrout/telepathy-qt,TelepathyIM/telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt4,freedesktop-unofficial-mirror/telepathy__telepathy-qt4,special/telepathy-qt-upstream,tiagosh/telepathy-qt,anantkamath/telepathy-qt,TelepathyQt/telepathy-qt,anantkamath/telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt4,TelepathyIM/telepathy-qt,detrout/telepathy-qt,TelepathyQt/telepathy-qt