* module/language/c99/compiler.mes: (pke): New function.
(expr->number): Rename from p-expr->number. Update callers.
(decl->info, init-declr->pointer, struct-field): Several pointeryness fixes.
(expr->accu*, expr->accu): Remove special-casing for foo.bar,
foo->bar, foo[bar]. Fixes struct by value assign for non-trival
expressions.
(accu->ident, ident-address->accu, ident->accu):
(base->ident-address, ident->base): Remove.
* scaffold/tests/7k-for-each-elem.c (test): Test it.
* scaffold/tests/7c-dynarray.c (test): Test it.
* scaffold/tests/7m-struct-char-array-assign.c: Test it.
* make.scm (add-scaffold-test): Build it.
* module/language/c99/compiler.mes (struct-field): Use negative
pointer for struct array fields.
(expr->accu): support: support foo.bar[baz], foo->bar[baz] for struct bar.
* scaffold/tests/7c-dynarray.c: Test it.
