treewide: fix assorted issues revealed by the meta checker

Turns out a couple of the licenses were wrong, as well as being strings.

pkgs/development/tools/misc/binutils/default.nix

@@ -95,6 +95,6 @@ stdenv.mkDerivation rec {
 
     /* Give binutils a lower priority than gcc-wrapper to prevent a
        collision due to the ld/as wrappers/symlinks in the latter. */
-    priority = "10";
+    priority = 10;
   };
 }