Use common licence attributes from lib/licenses.nix

Many (less easily automatically converted) old-style strings
remain.

Where there was any possible ambiguity about the exact version or
variant intended, nothing was changed. IANAL, nor a search robot.

Use `with stdenv.lib` wherever it makes sense.

pkgs/development/haskell-modules/hackage-packages.nix

@@ -4726,7 +4726,7 @@ self: {
        sha256 = "1kf638h5gsc8fklhaw2jiad1r0ssgj8zkfmzywp85lrx5z529gky";
        buildDepends = [ base haskell98 ];
        description = "A finite map implementation, derived from the paper: Efficient sets: a balancing act, S. Adams, Journal of functional programming 3(4) Oct 1993, pp553-562";
-       license = "BSD4";
+       license = stdenv.lib.licenses.bsdOriginal;
        hydraPlatforms = stdenv.lib.platforms.none;
      }) {};
 
@@ -21072,7 +21072,7 @@ self: {
          glib Glob gtk gtksourceview2 hint mtl process syb
        ];
        description = "A GTK-based abstract syntax tree viewer for custom languages and parsers";
-       license = "BSD4";
+       license = stdenv.lib.licenses.bsdOriginal;
        hydraPlatforms = stdenv.lib.platforms.none;
      }) {};
 
@@ -21084,7 +21084,7 @@ self: {
        sha256 = "1rqqlngmcdd7i1gww95lyim971w8xv0hjg20h0j8av4y29pjxfyn";
        buildDepends = [ base containers syb ];
        description = "Interfacing between hint and astview";
-       license = "BSD4";
+       license = stdenv.lib.licenses.bsdOriginal;
      }) {};
 
   "async" = callPackage