windeployqt: Add deployment of the WebKit2.

Add option -webkit2 for forcing it.

Change-Id: I3d75f00dc36beb60b0f54982b0d03415d4916826
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
windeployqt: Report directory with correct slashes.

Change-Id: I88c5e6af3dc37a69701be0ffc2913fb6834e31bf
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>