Mac: Deploy and patch qml imports and qml2puppet

The patching of imports and plugins is done automatically by macdeployqt,
we need to pass it the qml2puppet executable though.
Also add Qml2Imports to the qml(2)puppet's qt.conf.

Task-number: QTCREATORBUG-9136
Change-Id: I9cb21d104f4c0c42531facfc6bc92fa9663e95a9
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>