Pass 1st and 2nd stage hits to HoughRootOutputTool
Right now only the 1st stage hits are available in the LogicalHitsProcessAlg. In order to be able to write out all the hits in the HoughRootOutputTool from there, the 2nd stage hits are accessed from SG and added to the vector of hits for the OutputTool.
Also: fixed two variables not being written to the output file properly.