Does Copter 4.4.4 support real time tracing with LTTng? The docs (Using Linux Trace Toolkit ng (LTTng) to Create Realtime ArduPilot Traces — Dev documentation) and supporting github repo show how to modify older versions of Copter for LTTng tracing. The current has the configure --enable-lttng option. Not sure what enabling this option actually does in the configuration or how to properly modify the current code for tracing.