added Greenwood/Williamson contact area calculation
more work toward computation and output of real area of contact
added contact area calculation
added contact area calculation for Greenwood-Williamson model
cleaned up GreenwoodWilliamson.cpp
removed unneccesary call to linear penalty function
improved functionality of Greenwood & Williamson contact model
This commit was manufactured by cvs2svn to create tag 'T020102'.
added parameters
updated parameter list; moved coefficient calculation