New formula: OpenSG 1.8

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

Formula/open-sg.rb

@@ -0,0 +1,18 @@
+require 'formula'
+
+class OpenSg <Formula
+  head 'cvs://:pserver:anonymous@opensg.cvs.sourceforge.net:/cvsroot/opensg:OpenSG'
+  homepage 'http://www.opensg.org/wiki'
+
+  depends_on 'libtiff'
+  depends_on 'jpeg'
+
+  def install
+    ENV.deparallelize
+    ENV.no_optimization
+    system "./configure", "--prefix=#{prefix}", "--enable-glut", "--enable-tif", "--enable-jpg"
+    Dir.chdir 'Builds/i386-apple-darwin-g++'
+    system "make opt"
+    system "make install"
+  end
+end