FreeFem++-v3.62

Added

• add x0=true/false, add veps=eps in solver parameters to initiaze of not the the CG , GMRES algo
  with 0 or previous value and veps is to get the absolue tolerance

• A tool of solve adjoint matrix A with only one single LU decomposition with LU, UMFPACK, GMRES
  u[]=A'^-1*b;

• Add plugin to save matrix in Harwell-Boeing format (see Harwell-Boeing format)

Fixed

• Fix bug in trunc (2d) in case of very fine mesh (eps too small)

3.61

3.61