matita_130312: mark as broken

pkgs/applications/science/logic/matita/130312.nix

···
   name = "${pname}-${version}";
 
   src = fetchurl {
-    url = "http://matita.cs.unibo.it/sources/${pname}_130312.tar.gz"; 
+    url = "http://matita.cs.unibo.it/sources/${pname}_130312.tar.gz";
     sha256 = "13mjvvldv53dcdid6wmc6g8yn98xca26xq2rgq2jg700lqsni59s";
   };
 
···
   '';
 
   prePatch = ''
-   autoreconf -fvi 
+   autoreconf -fvi
   '';
 
   buildInputs = [ocaml findlib gdome2 ocaml_expat gmetadom ocaml_http lablgtk ocaml_mysql ocamlnet ulex08 camlzip ocaml_pcre automake autoconf];
···
     description = "Matita is an experimental, interactive theorem prover";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = [ stdenv.lib.maintainers.roconnor ];
+    broken = true;
   };
 }