Fixes “The parameter is incorrect.” error when launching Legacy Update from the Start menu or Control Panel on Windows 2000 and XP 32-bit.

Fixes the Legacy Update proxy server not being configured correctly, causing connection errors (error 80072EFE) when checking for updates on Windows 2000, XP, and Vista. Fix contributed by @renodr - thanks!

Legacy Update now configures .NET Framework to use the Windows SSL configuration. This ensures programs built on .NET can access the same websites you can access in Internet Explorer.

When running on a processor that doesn't support later Windows Embedded POSReady 2009 updates (Intel processors prior to Pentium 4/Pentium M, and AMD processors before Athlon 64), Legacy Update will now disallow enabling POSReady updates. See #89 for more information.

When downloading Internet Explorer 6 SP1 for Windows 2000, Legacy Update now downloads the installer for your language directly from Microsoft. Previously, this would download an English-only copy of the IE6 installer hosted by Legacy Update. Huge thanks to @stdin82 for finding live IE6 download links on the Windows Update server.

This change was also able to be backported to earlier versions of Legacy Update. A separate “Internet Explorer 6 Downloader” helper will be launched when running from these versions.

Fixes the Legacy Update proxy server not being removed on uninstall on Windows Vista, and Windows Update shortcuts not being restored on uninstall on Windows XP x64/Server 2003. Fix contributed by @stdin82 - thanks!

General code cleanup: Rebuilt Windows version checking logic from scratch to avoid annoying edge cases in the NSIS WinVer.nsh library Legacy Update was previously using, and consolidated repetitive code for patches.