[PATCH] user32: Reimplement TrackMouseEvent.

[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=34248

Your paranoid android.


=== w864 (32 bit msg) ===
msg.c:14045: Test failed: unexpected message 31f
msg.c:14046: Test failed: bad wparam 1
msg.c:14052: Test failed: unicode WM_CHAR: 0: the msg sequence is not complete: expected 0102 - actual 0000