OP-1026 Add a task monitor api to calculate idle percentage
OP-1026 replace idle time calculation with task monitor API
OP-1026 remove legacy idle time calculation in OPLink code
OP-1026 fix review issues
Merge branch 'amorale/OP-1026_cpu_idle' into next
OP-1233 fixed parallel build regression introduced when splitting openpilotgcs target into _make and _qmake
both _make and _qmake would wrongly run in parallel when using -j2 or similar option
Merge branch 'next' of git://git.openpilot.org/OpenPilot into next
Merge branch 'next' into thread/OP-1245_FlightLog_Configuration_And_Control_GUI