dumpers: Add test for QUrl() and fix it

Change-Id: I84d4963210784dd982e897fd57dc9e5fad086aef
Reviewed-by: hjk <hjk121@nokiamail.com>
Android: Don't create kits if there is no device

Task-number: QTCREATORBUG-10574

Change-Id: I169762ce9d2388866f1aa16f2b7128cfd42e7cee
Reviewed-by: Daniel Teske <daniel.teske@digia.com>