extupdate is not very useful for most platforms, so only
build it if --enable-extupdate is passed to configure
Origin commit data
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Commit: 5b72a7fe3c
Author: Stefan Seyfried <seife@tuxbox-git.slipkontur.de>
Date: 2013-02-22 (Fri, 22 Feb 2013)
Beware the canonical order of filenames.
Origin commit data
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Commit: 9939fc9197
Author: Thilo Graf <dbt@novatux.de>
Date: 2013-01-13 (Sun, 13 Jan 2013)