Windows version detect issue

`CSymEngine::GetOsInfo(COsInfo& rOsInfo)` uses deprecated GetVersionEx API. Applications not manifested for Windows 8.1 or Windows 10 will return the Windows 8 OS version value (6.2).

We need to find out better way to get windows version, including real major/minor versions, product type, etc.

For a workaround, I just take kernel32.dll version: https://github.com/GoldRenard/BugTrap/commit/ab264288d75990f6f9407ef371187ee919970eee In this way we don't know the real product type, so we can't detect is it server OS or client.