Fix windows auth

[eByte23]

Try and fix windows auth implementation, utilise new System.Runtime.IsOsPlatform(OSPlatform.Windows) so that it will only be available on windows(if there isn't a way of supporting on *nix)

[SapientGuardian]

Does 6.9.8-rc2-007 fully add support for windows auth, or was that just a piece of the work? Cross-plat?

[eByte23]

It should now be fully support it but still to completely tested so give a day to setup and test all senarios.

Technically should allow cross plat windows auth for mysql. I believe but havent looked all the way through the code

[eByte23]

@SapientGuardian Well I can't even find a version that lets me configure windows auth so maybe not a problem?

Do you have version that uses win auth at all?

[SapientGuardian]

I believe it's part of MySQL Enterprise for Windows. I only have the community edition.

[eByte23]

Okay cool, I'll see if I can get my hands on a copy so I can test it. Cheers!