Cache files created ahead of time do not require a timestamp match
towards the source file. This is because we cannot guarantee that all
transport mechanism from source to deployment preserve the timestamp at
the required resolution (if at all) and the source may also not be
present at all (obfuscated deployment chosen).
For cache files created at run-time however we'll continue to require
time stamp verification.
Change-Id: Ia7cdf3d063edd5bb1e6985089f1a666c970a0bd0
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
55e558144d