Update x264

* Use a newer revision of x264
* Remove unused configure flags
* Silence two warnings by editing flags

Formula/x264.rb

@@ -1,13 +1,27 @@
 require 'formula'
 
 class X264 <Formula
-  head 'git://git.videolan.org/x264.git', :tag => '114461'
+  homepage 'http://www.videolan.org/developers/x264.html'
+  head 'git://git.videolan.org/x264.git',
+        :tag => '20fa784d2d9e0d5e524d4e3834699e9ff9b57511'
+
   depends_on 'yasm'
 
-  homepage 'http://www.videolan.org/developers/x264.html'
 
   def install
-    system "./configure", "--prefix=#{prefix}", "--disable-debug", "--disable-dependency-tracking","--enable-shared"
+    system "./configure", "--prefix=#{prefix}",
+                          "--enable-shared"
+
+    inreplace 'config.mak' do |s|
+      ldflags = s.get_make_var 'LDFLAGS'
+      s.change_make_var! 'LDFLAGS', ldflags.gsub!(' -s', '')
+
+      if MACOS_VERSION >= 10.6 and Hardware.is_64_bit?
+        soflags = s.get_make_var 'SOFLAGS'
+        s.change_make_var! 'SOFLAGS', soflags.gsub!(' -Wl,-read_only_relocs,suppress', '')
+      end
+    end
+
     system "make install"
   end
 end