libdvdread: Update to 4.2.0

New homepage, HEAD URL, actually build against libdvdcss.

Closes Homebrew/homebrew#8500.

Signed-off-by: Charlie Sharpsteen <source@sharpsteen.net>

Formula/libdvdread.rb

@@ -1,22 +1,21 @@
 require 'formula'
 
 class Libdvdread < Formula
-  homepage 'http://www.dtek.chalmers.se/groups/dvd/'
-  # Official site is down; use a mirror.
-  url 'http://www.mplayerhq.hu/MPlayer/releases/dvdnav-old/libdvdread-4.1.3.tar.bz2'
-  md5 '6dc068d442c85a3cdd5ad3da75f6c6e8'
+  homepage 'http://dvdnav.mplayerhq.hu/'
+  url 'http://dvdnav.mplayerhq.hu/releases/libdvdread-4.2.0.tar.bz2'
+  head 'svn://svn.mplayerhq.hu/dvdnav/trunk/libdvdread'
+  md5 'ab7a19d3ab1a437ae754ef477d6231a4'
 
   depends_on 'libdvdcss' => :optional
 
-  def patches
-    # compatibility patch provided by dvdbackup
-    "http://dvdbackup.sourceforge.net/DVDFileStat.patch"
-  end
-
   def install
-    system "./autogen.sh"
-    system "./configure", "--disable-debug", "--disable-dependency-tracking",
-                          "--prefix=#{prefix}"
+    if Formula.factory("libdvdcss").installed?
+      ENV.append "CFLAGS", "-DHAVE_DVDCSS_DVDCSS_H"
+      ENV.append "LDFLAGS", "-ldvdcss"
+    end
+
+    system "./autogen.sh", "--disable-debug", "--disable-dependency-tracking",
+                           "--prefix=#{prefix}"
     system "make install"
   end
 end