Squeak Win32 VM update (3.11.8)

>
> Folks -
>
> I've updated the Windows VM to 3.11.8. This is purely a maintenance
> update with a few fixes, including:
> * Updated VMMaker which makes BitBltTests pass
> * Fixes an issue with incorrect clipboard handling
> * Handles certain errors more gracefully
> Unless you specifically care about any of the of the above it's
> perfectly safe to stay with your current 3.11.x VMs for the time being.
>
> As usual, binaries and source are available at
>
> http://squeakvm.org/win32/release/SqueakVM-Win32-3.11.8-bin.zip
> http://squeakvm.org/win32/release/SqueakVM-Win32-3.11.8-src.zip
>
> Cheers,
>   - Andreas
>
>