(svn r14197) -Codechange: rework (original) base graphics determination methods. This yields in the following:

-Feature: make configuring the to-be-used base graphics via openttd.cfg and the command line possible.
-Feature: allow both the German as well as non-German toyland graphics as "correct" and official graphics.
-Feature: allow people to create their own base graphics easily and without requiring code changes.

bin/data/orig_dos.obg

@@ -0,0 +1,31 @@
+; $Id$
+;
+; This represents the original graphics as on the non-German Transport
+; Tycoon Deluxe DOS CD.
+;
+[metadata]
+name         = original_dos
+shortname    = TTDD
+version      = 1
+description  = Original Transport Tycoon Deluxe DOS edition graphics
+palette      = DOS
+
+[files]
+base         = TRG1.GRF
+logos        = TRGI.GRF
+arctic       = TRGC.GRF
+tropical     = TRGH.GRF
+toyland      = TRGT.GRF
+extra        = OPENTTDD.GRF
+
+[md5s]
+TRG1.GRF     = 9311676280e5b14077a8ee41c1b42192
+TRGI.GRF     = da6a6c9dcc451eec88d79211437b76a8
+TRGC.GRF     = ed446637e034104c5559b32c18afe78d
+TRGH.GRF     = ee6616fb0e6ef6b24892c58c93d86fc9
+TRGT.GRF     = e30e8a398ae86c03dc534a8ac7dfb3b6
+OPENTTDD.GRF = f829f62c137d6d7c6e272c481b796dd5
+
+[origin]
+default      = You can find it on your Transport Tycoon Deluxe CD-ROM.
+OPENTTDD.GRF = This file was part of your installation.