Update qtractor to 0.9.17
- Fixed crash when changing an auto-monitored audio track's number of channels due on switching its audio output bus.
- Avoid a complete track re-open when changing properties, unless either input or output buses are changed.
- Fixed custom track icon selection when none is currently set.
Test Plan: - Connect to JACk server and qsynth to play sounds.
Reviewers: Triage Team, JoshStrobl
Reviewed By: Triage Team, JoshStrobl
Differential Revision: https://dev.getsol.us/D9701