Fix the build process to install the included free ttf fonts.

SConstruct

@@ -156,3 +156,7 @@ if 'raster' in inputplugins:
 # Build the core library
 
 SConscript('src/SConscript')
+
+# Install some free default fonts
+
+SConscript('fonts/SConscript')

fonts/SConscript

@@ -0,0 +1,27 @@
+#  This file is part of Mapnik (c++ mapping toolkit)
+#  Copyright (C) 2005 Artem Pavlenko, Jean-Francois Doyon
+#
+#  Mapnik is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or any later version.
+# 
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+# 
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+# 
+# $Id$
+
+import glob
+
+Import('env')
+
+prefix = env['PREFIX']
+
+includes = glob.glob('*/*.ttf')
+env.Alias(target='install', source=env.Install(prefix+'/lib/mapnik/fonts', includes))