Follow up on the comissioning of the Length/Pitch OSEM estimator for PR3. 

I tuned up the pitch OSEM / Model filters and created some equivalent model filters for length. The functions that make the model and osem filters live in:
       blend_PR3_lengthv2_LP_est.m
       blend_PR3_pitchv2_LP_est.m

The files were committed to the SVN at (svnRoot)/sus/trunk/HLTS/Common/FilterDesign/Estimator/ under revision 12735. 

I saw that there is a new make_EST_blends function that will work nicely with these functions, so I will recommend using that one for getting these onto the real-time model.