[PATCH] include: Make ARRAY_SIZE() available in wine/test.h

[Marvin]

Hi,

While running your changed tests on Windows, 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=38650

Your paranoid android.


=== wvistau64 (32 bit eventlog) ===
eventlog.c:935: Test failed: record 3, got 5