  Orthogonality of the Jacobi and of Laguerre polynomials, P_n^(a,b) and
L_n^(a), is established for a,b complex (a,b not negative integers and a+b
different from -2,-3,...) using the Hadamard finite part of the integral which
gives their orthogonality in the classical cases. Riemann-Hilbert problems that
these polynomials satisfy are found.
  The results are formally similar to the ones in the classical case (when the
real parts of a,b are greater than -1)
