davmail: use default (not old) zulu and jdk

  glib,

  gtk2,

  gtk3,

  jdk11,

  jdk,

  libXtst,

  coreutils,

  gnugrep,

  zulu11,

  zulu,

  preferGtk3 ? true,

  preferZulu ? true,

}:

let

  rev = 3755;

  jre' = (if preferZulu then zulu11 else jdk11).override { enableJavaFX = true; };

  jre' = (if preferZulu then zulu else jdk).override { enableJavaFX = true; };

  gtk' = if preferGtk3 then gtk3 else gtk2;

in

stdenv.mkDerivation rec {