nano: Update to 2.2.6

Also enable all features that were disabled (mouse support!).  This
adds a whopping 48 KB to the binary.

pkgs/applications/editors/nano/default.nix

@@ -2,27 +2,16 @@
 
 stdenv.mkDerivation (rec {
   pname = "nano";
-  version = "2.2.3";
+  version = "2.2.6";
 
   name = "${pname}-${version}";
 
   src = fetchurl {
     url = "mirror://gnu/nano/${name}.tar.gz";
-    sha256 = "1vpl993xrpj8bqi1ayga8fc0j2jag90xp6rqakzwm3bxw71hmwi2";
+    sha256 = "0yp6pid67k8h7394spzw0067fl2r7rxm2b6kfccg87g8nlry2s5y";
   };
-  
+
   buildInputs = [ ncurses gettext ];
-  
-  configureFlags = ''
-    --disable-browser 
-    --disable-help 
-    --disable-justify 
-    --disable-mouse 
-    --disable-operatingdir
-    --disable-speller
-    --disable-tabcomp
-    --disable-wrapping
-  '';
 
   meta = {
     homepage = http://www.nano-editor.org/;