Example program for ztbcon

This example estimates the condition number in the 1-norm of the matrix A, where
A= -1.94+4.43i 0.00+0.00i 0.00+0.00i 0.00+0.00i -3.39+3.44i 4.12-4.27i 0.00+0.00i 0.00+0.00i 1.62+3.68i -1.84+5.53i 0.43-2.66i 0.00+0.00i 0.00+0.00i -2.77-1.93i 1.74-0.04i 0.44+0.10i .  
Here A is treated as a lower triangular band matrix with two subdiagonals. The true condition number in the 1-norm is 71.51.