[PATCH v2] dmime/tests: Add a notification_type test

[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=57303

Your paranoid android.


=== w864 (32 bit report) ===

dmime:
performance.c:432: Test failed: Failed: 258
performance.c:469: Test failed: Wrong end segment
performance.c:470: Test failed: Didn't recieve DMUS_NOTIFICATION_SEGEND message