xmoto 0.5.9

This patches tim_png.cpp to include zlib.h on Lion.  This
builds and runs well on Lion and Snow Lep with all compilers.

Reported upstream as:
http://todo.xmoto.tuxfamily.org/index.php?do=details&task_id=783

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/xmoto.rb

@@ -1,10 +1,11 @@
 require 'formula'
 
 class Xmoto < Formula
-  url 'http://download.tuxfamily.org/xmoto/xmoto/0.5.7/xmoto-0.5.7-src.tar.gz'
+  url 'http://download.tuxfamily.org/xmoto/xmoto/0.5.9/xmoto-0.5.9-src.tar.gz'
   homepage 'http://xmoto.tuxfamily.org/'
-  md5 'c4b8477412445e114843b3b6163937f3'
+  sha1 '07757accce78151dc8873bef8270df0e56196772'
 
+  depends_on 'libxml2'
   depends_on 'gettext'
   depends_on 'jpeg'
   depends_on 'sdl'
@@ -14,10 +15,29 @@ class Xmoto < Formula
   depends_on 'lua'
   depends_on 'ode'
 
+  # Fixes compiling against libpng on Lion. See:
+  # http://todo.xmoto.tuxfamily.org/index.php?do=details&task_id=783
+  def patches
+    DATA
+  end
+
   def install
-    ENV.append "CPPFLAGS", "-I#{include} -I/usr/X11/include"
-    ENV.append "LDFLAGS", "-framework OpenGL -framework Cocoa -L#{lib} -L/usr/X11/lib -lstdc++ -lSDLmain -lSDL -lSDL_mixer -lpng"
-    system "./configure", "--prefix=#{prefix}", "--with-internal-xdg=1"
+    # The ENV.x11 picks up libpng and sets CFLAGS and LDFLAGS
+    ENV.x11
+    system "./configure", "--prefix=#{prefix}", "--with-internal-xdg=1", "--with-apple-opengl-framework"
     system "make install"
   end
 end
+
+__END__
+diff --git a/src/image/tim_png.cpp b/src/image/tim_png.cpp
+index 75fd545..a1d1cf6 100644
+--- a/src/image/tim_png.cpp
++++ b/src/image/tim_png.cpp
+@@ -24,6 +24,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+  */
+ #include <stdio.h>
+ #include <string.h>
++#include <zlib.h>
+ #include "tim.h"
+ #include "png.h"