start-jsk/rtmros_common — pull request #514 by mmurooka (2014-07-22 08:41:32+00:00)
Title: Fixed accessing to force sensor in calibration function

`(send robot :force-sensor a)` returns `nil`, so I fixed.
This is the same accessing way as https://github.com/start-jsk/rtmros_common/blob/master/hrpsys_ros_bridge/euslisp/rtm-ros-robot-interface.l#L74.