qmlplugindump is missing --noinstantiate option on Qt 4.8

Backport of --noinstantiate option from Qt 5.0.

Task-number: QTBUG-36380
Change-Id: I80694aa94c5d5cceaf2751d1e3efc80e4f316709
Signed-off-by: Daniel Pesch <dpesch@blackberry.com>
Reviewed-by: Alan Alpert <aalpert@blackberry.com>