Fix F03 interface
Fixes the F03 interface. The functions xc_f03_func_get_n_ext_params
, xc_f03_func_get_ext_params_description
and xc_f03_func_get_ext_params_default_value
declared the wrong pointer type.
Fixes the F03 interface. The functions xc_f03_func_get_n_ext_params
, xc_f03_func_get_ext_params_description
and xc_f03_func_get_ext_params_default_value
declared the wrong pointer type.