Build with /MT on Windows so we can stop having to install a redistributable... makes installer less noisy but unfortunately makes binary bigger. Oh well.
Disable SSE on 32-bit Windows builds since people might still be using old school chips... x64 builds with SSE since pretty much all AMD64/x86_64 chips have it.
Script to build UI against our own new precompiled Win32 static Qt binary, which paradoxiclally results in a smaller executable than dynamic Qt and doesn't require us to bundle a million DLLs. Also update installer to reflect that. Finally, add a step to the installer to remove all instances of the tap device on full uninstall so as not to leave orphaned junk in your network connections or device manager. Looking good!