This allows the QtQuick1 types to be dumped with --builtin and to be
skipped when dumping other plugins that use them.

Change-Id: I23ecba5cea7c11e998861746f1c7056e8911abf3
Reviewed-on: http://codereview.qt.nokia.com/3650


Reviewed-by: Erik Verbruggen <erik.verbruggen@nokia.com>