Add OpenText/brother installers and update printer installer scripts

- New PrinterInstaller support for Brother MFC-J series (driver source,
  DSI files; binaries gitignored)
- New OpenText HostExplorer 15 installer (profiles, shortcuts, .iss;
  .exe/.cab/.msi gitignored)
- New HP printer driver support files (.gpd/.cfg/.xml/.dtd) for 3556
  model series
- PrinterInstaller.iss rework with additional driver paths
- FQDNUpdate, MachineAuth, XeroxOfflineInstaller minor updates

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

MachineAuth/MachineAuth.iss

@@ -418,7 +418,7 @@ end;
 
 procedure CurStepChanged(CurStep: TSetupStep);
 var
-  ResultForm: TSetupForm;
+  ResultForm: TForm;
   Memo: TNewMemo;
   OKButton: TNewButton;
 begin
@@ -435,7 +435,7 @@ begin
     // Show results in non-silent mode
     if not WizardSilent then
     begin
-      ResultForm := CreateCustomForm;
+      ResultForm := TForm.Create(nil);
       ResultForm.Caption := 'Configuration Results';
       ResultForm.ClientWidth := 600;
       ResultForm.ClientHeight := 450;