$docdev fixups: mostly to avoid empty output

... after auto-removing some kinds of files by default.
In some cases I let them be removed and in others I let them be put into
$docdev. That was more due to general indecisiveness on this question
than any reasons in the particular cases.

pkgs/development/libraries/schroedinger/default.nix

@@ -11,7 +11,7 @@ stdenv.mkDerivation {
     sha256 = "04prr667l4sn4zx256v1z36a0nnkxfdqyln48rbwlamr6l3jlmqy";
   };
 
-  outputs = [ "dev" "out" "doc" ]; # dev-doc only
+  outputs = [ "dev" "out" "docdev" ];
 
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ orc ];