bug fixes discovered after switching to ifx: unit initialization in read_prefilter, MPI type error in mpitest.f90

central peak checks on convolution function. Check now only on central peak, allowing multiple FP like peaks

central peak checks on convolution function. Check now only on central peak, allowing multiple FP like peaks

central peak checks on convolution function. Check now only on central peak, allowing multiple FP like peaks

added the support for using the atm_ outpout files as ATM_INPUT files (requires the change of order in the fits file)

Fixed some small bux at various places.