(svn r2371) - Fix: [ 1144510 ] make install tries to install scenarios in the (non-existing) personal dir when USE_HOMEDIR is specified.

This fix solves the issue for now by installing scenarios in the system-wide data dir.
- Add: 32x32 xpm format icon, used for debian packaging.
- Some minor updates to the os/debian directory.

os/debian/README.Debian

@@ -7,13 +7,22 @@ You should copy the data files from the original TTD into the data directory
 
 -Music
 	For in game music (optional), you should copy all files in the data/gm
-	folder of you ttd installation to /usr/share/games/openttd/gm.  You
+	folder of your ttd installation to /usr/share/games/openttd/gm.  You
 	should also install timdity and a soundfont (freepats is packaged in
 	debian and works out of the box).
 
 	Don't forget to use -m extmidi if you want music, and if you have
 	problems, remember that not all audio devices support multiple
 	audiostreams (music and sound), so you might have to use software
-	mixing. AC97 codec cannot do hardware mixing, for example.
+	mixing. My VIA AC97 device cannot do hardware mixing, for example.
 
- -- Matthijs Kooijman <m.kooijman@student.utwente.nl>, Wed, 15 Sep 2004 00:24:01 +0200
+-Scenarios
+	There are a few scenarios included in this release. When you start openttd
+	it will look for scenarios in ~/.openttd/scenario, while the premade
+	scenarios are in /usr/share/games/openttd/data/scenario. You have two
+	options to use the scenarios.
+	* Navigate to /usr/share/games/openttd/data/scenario within openttd.
+	* Copy scenarios from /usr/share/games/openttd/data/scenario to
+	  ~/.openttd/scenario. We are looking into a better solution for this.
+
+ -- Matthijs Kooijman <m.kooijman@student.utwente.nl>, Tue, 25 Jan 2004 14:11:01 +0200