[PATCH] kernel32: Add K32GetWsChangesEx stub

[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=51901

Your paranoid android.


=== debian9 (32 bit report) ===

psapi:
psapi_main.c:262: Test failed: expected approximately 487477 but got 489709
psapi_main.c:271: Test failed: expected approximately 32114 but got 29882

=== debian9 (32 bit Chinese:China report) ===

psapi:
psapi_main.c:262: Test failed: expected approximately 493261 but got 495338
psapi_main.c:271: Test failed: expected approximately 26330 but got 24253

=== debian9 (32 bit WoW report) ===

psapi:
psapi_main.c:262: Test failed: expected approximately 473776 but got 474706
psapi_main.c:271: Test failed: expected approximately 45815 but got 44885

=== debian9 (64 bit WoW report) ===

psapi:
psapi_main.c:262: Test failed: expected approximately 483260 but got 484221
psapi_main.c:271: Test failed: expected approximately 36331 but got 35370