* deffilep.y (cmp_import_elem): Sort first by module name.

    * deffilep.y (cmp_import_elem): Sort first by module name.
        * pe-dll.c (process_def_file_and_drectve): Free strings
        from removed export-element.
        (add_bfd_to_link): Optimize loop on import-elements and lower
        allocated memory.
        (pe_implied_import_dll): Pass NULL instead of 0 for pointer
        argument.