Added HpParams class

src/Getgridcell.cc

src/Healpix.cc

src/Selgridcell.cc

src/Vargen.cc

src/Zonstat.cc

src/cdo_cdi_wrapper.cc

src/cdo_cdi_wrapper.h

src/grid_point_search.cc

src/grid_point_search.h

src/mpim_grid/grid_healpix.cc

src/mpim_grid/grid_healpix.h

src/mpim_grid/mpim_grid.cc

src/remap.h

src/remap_bilinear.cc

src/remap_grid.h

src/remap_point_search.cc

src/remap_search_latbins.cc

src/remap_search_reg2d.cc

src/remaplib.cc