Introduced [master] "audio_cpu_usage" and [master] "audio_cpu_overload"
Remove redundant nop check in enginevumeter
Make audio_cpu_overload indicator working
Renamed [Master] "underflow_count" to "audio_cpu_overload_count" to match other new COs
It was also counting buffer overflows anyway.
Make "audio_cpu_usage" working. Scale to 25%, because I am facing underflows above.
silence debug message
comment out Trace calls
Changed prefix of performance measure cos to audio_latency_*
Introduces [Master] "enabled" and "headEnabled"
Added prefernce option to disable master Mix
Enable Master Mix if Master output is configured.
process buffers depending on Enabled CO
Don't stop populating the preset info list if we find a match.
Use helper methods / defines in ControllerPresetInfo instead of duplicating code.
Remove unused force-load option to ControllerPresetFileHandler.
Instantiate a ControllerInfoEnumerator intead of getting it from ControllerManager.
Don't enable the controller until applying the new preset.
Rename ControllerManager::getScriptPaths to ControllerManager::getPresetPaths.
Refactor how presets are loaded.

* ControllerManager no longer supports loading presets by filename.
* Move preset loading logic into PresetInfoEnumerator.
* Don't get the preset file handler from the Controller anymore since it's
  purely a function of the extension.
Revert "Instantiate a ControllerInfoEnumerator intead of getting it from ControllerManager."

This reverts commit 06d11ce7d6fba21cb3a3f6a2882e5f119f4718a2.

Conflicts:
	src/controllers/controllermanager.cpp