Update archiveresolver.py for correct handling of renamed variables

Change-Id: I9bb05bd069801bc5485ea2df1863b42e42c3b279
Reviewed-by: Antti Kokko <antti.kokko@digia.com>
Remove reference to to non-existent file from readme.txt

Task-number: QTBUG-35714

Change-Id: Iab470739be419b301de3115daf588815210dad60
Reviewed-by: Tarja Sundqvist <tarja.sundqvist@digia.com>
Reviewed-by: Antti Kokko <antti.kokko@digia.com>