* tradcpp.c (enum node_type): New hash types T_ASSERT, T_UNASSERT.
        (struct directive): Drop 4th argument from handlers.
        (do_define, do_line, do_include, do_undef, do_else, do_elif,
        do_endif): Similarly.
        (do_assert, do_unassert, do_ifdef, do_ifndef): New handlers.
        (do_ifxdef): Update as common handler of do_ifdef and do_ifndef.
        (make_definition, make_undef): Take a const char*.
        (make_assertion): New function.
        (struct directive_table): Update.
        (main): Handle -A command line argument.
        (handle_directive): Drop fourth handler argument.

From-SVN: r37820