darwin.file_cmds: add missing Libinfo dependency

Fixing:

```
/private/tmp/nix-build-file_cmds-264.1.1-osx-10.11.6.drv-0/file_cmds-264.1.1/ls/print.c:56:10: fatal error: 'membershipPriv.h' file not found
         ^~~~~~~~~~~~~~~~~~
1 error generated.
```

pkgs/os-specific/darwin/apple-source-releases/file_cmds/default.nix

@@ -1,8 +1,8 @@
-{ lib, appleDerivation, xcbuildHook, zlib, bzip2, xz, ncurses, libutil }:
+{ lib, appleDerivation, xcbuildHook, zlib, bzip2, xz, ncurses, libutil, Libinfo }:
 
 appleDerivation {
   nativeBuildInputs = [ xcbuildHook ];
-  buildInputs = [ zlib bzip2 xz ncurses libutil ];
+  buildInputs = [ zlib bzip2 xz ncurses libutil Libinfo ];
 
   # some commands not working:
   # mtree: _simple.h not found