navigator: takeoff fix, always reach takeoff altitude, even if first waypoint is lower
rc.mc_defaults: set default acceptance radius (NAV_ACCEPT_RAD) to 2m
navigator: autocontinue and RTL autolanding fixes
Merge pull request #998 from PX4/takeoff_fix

navigator: takeoff fix
Merge pull request #1014 from PX4/rtl_autoland_fix

navigator: autocontinue and RTL autolanding fixes
Merge remote-tracking branch 'upstream/master' into mtecs