Add colorized failure message for Windows 10.

[rjframe]

Both cmd.exe and powershell.exe support colorized text formatting on Windows 10; Anyone choosing to use the legacy cmd.exe would see the control character output rather than the colors, though.

I use the registry to check the Windows major version because the API functions (VerifyVersionInfo, etc.):

1. require an app manifest for Windows 8.1 and 10, and
2. are deprecated, presumably as part of the push to UWP.

[s-ludwig]

Thanks, good to know that the same escape codes are now possible on Windows! Shouldn't GetVersionEx work to determine the version? It's available since Windows 2000 and still works for UWP apps.

[rjframe]

Unless the application is manifested for Windows 8.1 or Windows 10[1], GetVersionEx will report as Windows 8 (and apparently is no longer recommended for >= 8.1[2]). I would bet most D developers don't manifest their applications (especially not the test executable), so this wouldn't work. The registry isn't a great method, but I'm not sure of a reliable way to do it otherwise, short of fixing dub to embed a manifest if present and generating a template manifest on dub init.

[1]: The manifest is an XML file included as a resource in the EXE.
https://msdn.microsoft.com/en-us/library/windows/desktop/aa374191(v=vs.85).aspx

[2]: https://msdn.microsoft.com/en-us/library/windows/desktop/ms724451(v=vs.85).aspx?f=255&MSPPError=-2147217396 - "Instead, use the Version Helper functions"