the reflect command has not been merged upstream yet

also try to start external ms5611

This reverts commit 71b2306a.

This broke the build due to git submodules. We need to work out how
ArduPilot is going to handle the external uavcan module dependency
before we enable this again

makes it more obvious where the build ends up

this helps building with upstream master

this makes it possible to build with upstream master

it breaks "apm1-hil" target for copter