Bugzilla Bug 214216

Debian ships sources for unace, while we install precompiled files. The
sources, along with a set of patches, can be found here:
http://ftp.de.debian.org/debian/pool/non-free/u/unace-nonfree/unace-nonfree_2.5.orig.tar.gz
http://ftp.de.debian.org/debian/pool/non-free/u/unace-nonfree/unace-nonfree_2.5-3.diff.gz

The origin of the sources is explained in the copyright file:

The original source code was obtained by mail from the upstream author
Marcel Lemke <mlemke@winace.com>.

Copyright Holder: Ace Compression Software <info@winace.com>

License:

        Copyright (C) 2005 Ace Compression Software <info@winace.com>
        All rights reserved.

        Public UnAce Licence
        --------------------

        The Public UnAce Package (v2.0 or later if not otherwise stated) is
        distritbuted under the following licence:

        "Package" refers to the collection of files distributed by the
Copyright
        Holder, and derivatives of that collection of files created through
        textual modification.

        "Standard Version" refers to such a Package if it has not been
modified,
        or has been modified in accordance with the wishes of the Copyright
        Holder.

        "Distribution" as it is used here means making data available to a
third
        party. No matter in which way the data is made available.

        "Copyright Holder" is ACE Compression Software.

        "Distribution Partner" is e-merge GmbH (authorised signatory).


        1. The Standard Version of Public UnAce Package may be freely
           distributed.

        2. The UnAce sources may be used in any software to handle ACE archives
           without limitations free of charge, but must not be used to
reproduce
           the ACE compression algorithm. This means that that the code must
not
           be used to develop an ACE compatible archiver (that is: software
           capable of compressing to Ace archives) in any way.

        3. Distribution of modified Public UnAce sources (as part of other
           software or as stand-alone package) requires that it is clearly
           stated in the documentation and source code that it is distributed
           under the Public UnAce Licence. The Public UnAce Licence has to be
           included in this package.

        4. The name of the Copyright Holder or the support of ACE archives may
           not be used to endorse or promote products derived from this package
           without specific prior written permission from the Copyright Holder
           or its Distribution Partner.

        5. This Software is distributed "AS IS". NO WARRANTY OF ANY KIND IS
           EXPRESSED OR IMPLIED. YOU USE AT YOUR OWN RISK. THE AUTHOR WILL NOT
           BE LIABLE FOR DATA LOSS, DAMAGES, LOSS OF PROFITS OR ANY OTHER KIND
           OF LOSS WHILE USING OR MISUSING THIS SOFTWARE.

        6. Installing and using the Public UnAce Package signifies acceptance
of
           these terms and conditions of the license.

        Marcel Lemke, ACE Compression Software

2.5-r1 in the tree with Debian's patchset