* Cleaned up a lot of description fields that contained newlines.

Some of these should be longDescriptions, but most others just
  shouldn't contain newlines.  E.g. write

    description = "Bla";

  and not

    description = ''
      Bla
    '';

  This pollutes "nix-env -qa --description" output.

svn path=/nixpkgs/trunk/; revision=14310

pkgs/tools/graphics/ploticus/default.nix

@@ -14,8 +14,7 @@ stdenv.mkDerivation {
   patches = [./ploticus-install.patch];
 
   meta = {
-    description = ''Ploticus, a non-interactive software package for
-                    producing plots and charts'';
+    description = "A non-interactive software package for producing plots and charts";
 
     longDescription = ''Ploticus is a free, GPL'd, non-interactive
       software package for producing plots, charts, and graphics from