[PATCH] Use Windows 10 as default prefix version.

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=105650

Your paranoid android.


=== debian11 (32 bit report) ===

kernel32:
process.c:3507: Test failed: OSMajorVersion not set 6

=== debian11 (32 bit Chinese:China report) ===

kernel32:
process.c:3507: Test failed: OSMajorVersion not set 6

=== debian11 (32 bit WoW report) ===

kernel32:
process.c:3507: Test failed: OSMajorVersion not set 6

=== debian11 (64 bit WoW report) ===

kernel32:
process.c:3507: Test failed: OSMajorVersion not set 6