* Postgres updated to 8.3.8 and 8.4.1. Dropped the "with args" and

"version" argument.  Added a few Postgres mirrors.

svn path=/nixpkgs/trunk/; revision=17804

pkgs/build-support/fetchurl/mirrors.nix

@@ -257,4 +257,10 @@ rec {
     http://archive.apache.org/dist/ # fallback for old releases
   ];
 
+  postgresql = [
+    http://ftp2.nl.postgresql.org/
+    ftp://ftp.nl.postgresql.org/pub/mirror/postgresql/
+    ftp://ftp.postgresql.org/pub/
+  ];
+
 }