cifs-utils: Add more useful dependencies

pkgs/os-specific/linux/cifs-utils/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, kerberos, keyutils, pam }:
 
 stdenv.mkDerivation rec {
   name = "cifs-utils-6.4";
@@ -8,11 +8,14 @@ stdenv.mkDerivation rec {
     sha256 = "1qz6d2xg4z1if0hy7qwyzgcr59l0alkhci6gxgjdldglda967z1q";
   };
 
+  buildInputs = [ kerberos keyutils pam ];
+
   makeFlags = "root_sbindir=$(out)/sbin";
 
-  meta = {
+  meta = with stdenv.lib; {
     homepage = http://www.samba.org/linux-cifs/cifs-utils/;
     description = "Tools for managing Linux CIFS client filesystems";
-    platforms = stdenv.lib.platforms.linux;
+    platforms = platforms.linux;
+    license = licenses.lgpl3;
   };
 }