* module/language/c99/compiler.mes (init-declr->pointer): Use -1 for array.
(expr->accu): Implement foo[i].bar.baz.
* scaffold/tests/72-typedef-struct-def.c (test): Test it.
* module/language/c99/compiler.mes (expr-add): New function.
(expr->pointer): New function.
(expr->accu): Use it to support broader pre/post-inc/dec..
* scaffold/tests/72-typedef-struct-def.c (test): Test it.
* module/language/c99/compiler.mes (expr->accu, expr->accu*): Support
pointer field selection.
* scaffold/tests/72-typedef-struct-def.c (test): Test it.