Re: ast branch

marshal_write_object() is empty in Python/asdl.c.  The only
use is in Python/Python-ast.c for writing a Number:

        case Num_kind:
                marshal_write_int(buf, off, 10);
                marshal_write_object(buf, off, o->v.Num.n);
                break;

Not sure what needs to be done here.  Do we need to handle 
arch sized ints?  (ie 4 or 8 bytes).  If not, couldn't we
just use marshal_write_int?

Neal