Tahoe Code SVN development benchmark

comparing mpich to optimized single processor run; they take about the same amount of
time,when comparing the two console files

cornea model

update for the fiber-comp element. Cornea distributions modelled with
smooth transitions between known distibutions in the center and the periphery.
Reduces need to mesh regions in a way that follows the boundaries of the
central region, etc.

also, update to the sensitivity studies

screen output for run172

screen output for run171

screen output for run170

screen output for run164

screen output for run163

screen output for run221

screen output for run220