Issue title: Add autopackage files for Linux
 Issue body: **Reported by takkaria on 21 Mar 2007 15:11 UTC**
To make building and installing easier for Linux people, put together an autopackage ([http://autopackage.org/]) file.  Probably relies on us having a working ./configure.
 Comments: 
 Comment 0: **Comment by arcum42\@gmail.com on 22 Apr 2007 21:52 UTC**
As a note, this should supplement, not replace, other methods of Linux distribution. Autopackage is x86 only - it is partially broken on 64-bit systems, and will not work on other processors...
 Comment 1: **Comment by takkaria on 25 Apr 2007 17:43 UTC**
Ah.  Doesn't sound like such a good idea, then.  (It wasn't going to replace anything else anyway.)
 Comment 2: **Modified by takkaria on 3 Jun 2007 16:18 UTC**
 Comment 3: **Comment by magnate on 28 May 2009 17:23 UTC**
Now that building a .deb is easy (and therefore an .rpm via alien), perhaps this is a wontfix?
 Comment 4: **Modified by magnate on 26 Jul 2009 18:24 UTC**
 Comment 5: **Comment by magnate on 26 Jul 2009 18:34 UTC**
Will be closed once the .deb (and .rpm) files are building properly with --enable-gtk and --with-private-dirs.
 Comment 6: **Comment by magnate on 13 Jan 2010 11:06 UTC**
Ok, this is essentially done, without autopackage. A .deb can be built by anyone checking out git://git.debian.org/collab-maint/angband.git (don't forget to pull in all submodules), and turned into an rpm with alien. Between the two, most major Linux distros are supported I think. See also #1076 for the Gentoo ebuild. Other package formats should be accommodated on an as-needed basis (no requests on Oook during 2009 for anything other than deb/rpm). 
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