WinSCP 5.1.2

- Not poping up progress window when application is minimized.
- Ensuring uniqueness of the XML logging path in .NET assembly.
- Bug fix: Never create Quick Launch icon on Windows 7 and newer also from Preferences dialog.
- Bug fix: Failure when reconnecting main session while transferring files in the background.
- Bug fix: Hangs when stopping watching for changes in local folder.
- Bug fix: Failure when reporting usage statistics.
- Bug fix: Failure when closing application, while checking for application updates.
- Bug fix: Session settings TunnelHostKey was not working.
- Bug fix: Session and directory information was not shown on tray icon tooltip.