MoveIt Setup assistant generates xacro entry that's not cross platform

[ooeygui]

The setup tool adds unneeded single quotes, which causes problems on Windows.

  <param if="$(arg load_robot_description)" name="$(arg robot_description)" command="xacro  '$(find x_arm_support)/urdf\workcell.xacro'"/>

Should generate something more like this:

  <param if="$(arg load_robot_description)" name="$(arg robot_description)" command="xacro  $(find x_arm_support)/urdf/workcell.xacro"/>

[bakerhillpins]

#106 provides info on the error generated when encountered in windows.

[seanyen]

Hope this could be addressed by this: https://github.com/ros/ros_comm/pull/2051

[IoTDan]

addressed in ROScomm