(GaitGenerator) : Update rectangle trajectory to use common linear path function
(samplerobot_terrain_walk) : Do not specify step height.
(AutoBalancer, GaitGenerator) : Add STAIR swing orbit type and gaitgeneratorParam for swing trajectory
(samplerobot_terrain_walk) : Support stair swing orbit type example
Merge pull request #369 from snozawa/add_new_trajectory_and_time

Add new trajectory and time