Returns the norms from the convergence test for the last analysis step.
NOTES: The size of norms will be equal to the max number of iterations specified. The first testIter of these will be non-zero, the remaining ones will be zero.
set norms [testNorms]
set norm1 [lindex $norms 0]
set normN [lindex $norms [testNorms]]
Code Developed by: fmk