Improved setup of auxiliary data for modal reduction, and bug fix.
Improved setup of auxiliary data for modal reduction, and bug fix.

rserban/chrono,projectchrono/chrono,dariomangoni/chrono,rserban/chrono,rserban/chrono,dariomangoni/chrono,projectchrono/chrono,projectchrono/chrono,projectchrono/chrono,projectchrono/chrono,rserban/chrono,dariomangoni/chrono,rserban/chrono,dariomangoni/chrono,projectchrono/chrono,dariomangoni/chrono,dariomangoni/chrono,rserban/chrono,rserban/chrono