windeployqt: Copy QML directory structure correctly.

Introduce a Module struct to QmlImportScanResult from which
the relative/absolute install path can be derived (similar
to macdeployqt).

Task-number: QTBUG-35638

Change-Id: Ief69779f4ea8659b346bf364ec748cfe78eb6728
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
windeployqt: Copy .qml files as well.

Change-Id: I8bf115a87bfa6e67e04d17c628a3efc55ef7413e
Reviewed-by: Andrew Knight <andrew.knight@digia.com>