Example program for zgbsv

This example solves the equations
Ax=b ,  
where A  is the band matrix
A = -1.65+2.26i -2.05-0.85i 0.97-2.84i 0.00i+0.00 6.30i -1.48-1.75i -3.99+4.01i 0.59-0.48i 0.00i+0.00 -0.77+2.83i -1.06+1.94i 3.33-1.04i 0.00i+0.00 0.00i+0.00 4.48-1.09i -0.46-1.72i  
and
b = -1.06+21.50i -22.72-53.90i 28.24-38.60i -34.56+16.73i .  
Details of the LU  factorization of A  are also output.