[PATCH v6] user32: Implement DM_REPOSITION message

[katahiromz .]

See attachment.

[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=59402

Your paranoid android.

=== wvistau64 (task log) ===

Task errors:
The previous 1 run(s) terminated abnormally

=== w1064v1809_ar (32 bit report) ===

user32:
dialog.c:1987: Test failed: dialog doesn't use message box font

=== w1064v1809_zh_CN (32 bit report) ===

user32:
dialog.c:1987: Test failed: dialog doesn't use message box font