openjpeg: stable url & little-cms as an optional dependency

head didn't work properly with libpng/libtiff for me as of openjpeg r767
version 1.4 (latest version) seems to work properly

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

Library/Formula/openjpeg.rb

@@ -1,10 +1,15 @@
 require 'formula'
 
 class Openjpeg < Formula
-  head 'http://openjpeg.googlecode.com/svn/trunk/'
   homepage 'http://www.openjpeg.org/'
+  url 'http://openjpeg.googlecode.com/files/openjpeg_v1_4_sources_r697.tgz'
+  version '1.4'
+  md5 '7870bb84e810dec63fcf3b712ebb93db'
+
+  head 'http://openjpeg.googlecode.com/svn/trunk/'
 
   depends_on 'cmake' => :build
+  depends_on 'little-cms' => :optional
   depends_on 'libtiff'
 
   def install