Cannot compile hrpsys_gazebo_atlas because of missing read_power

[garaemon]

CMakeFiles/RobotHardwareComp_gazebo.dir/home/leus/ros/hydro_parent/devel/share/hrpsys/src/rtc/RobotHardware/robot.cpp.o: In function `robot::readPowerStatus(double&, double&, double&)':
robot.cpp:(.text+0x27ba): undefined reference to `read_power'
collect2: ld returned 1 exit status
make[2]: *** [/home/leus/ros/hydro/devel/lib/hrpsys_gazebo_general/RobotHardwareComp] Error 1
make[1]: *** [iob/CMakeFiles/RobotHardwareComp_gazebo.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

[k-okada]

This should be fixed with fkanehiro/hrpsys-base#597