Deprecated issue regarding btQuaternion in electric

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The bullet manifest says:

• "To eliminate ambiguity about which API is active the btQuaternion constructor from Euler angles is deprecated. Please explicitly construct it and populate it seperately from euler angles, otherwise it is ambiguous as to what convention is being used."

At this point, I would avoid using the bullet types directly, as they will change again in Fuerte. Here's a solution using only the tf typedef:

// translate roll, pitch and yaw into a Quaternion
tf::Quaternion q;
q.setRPY(pcl::deg2rad(data_set[t][6]), 
         pcl::deg2rad(data_set[t][7]), 
         pcl::deg2rad(data_set[t][8]));

Note the reordering from (yaw, pitch, roll) to (roll, pitch, yaw).