Handle assignment of the accessor value identified by |name|. |object| is
the receiver ('this' object) of the accessor. |value| is the new value
being assigned to the accessor. If assignment fails set |exception| to the
exception that will be thrown. Return true (1) if accessor assignment was
handled.
Handle assignment of the accessor value identified by |name|. |object| is the receiver ('this' object) of the accessor. |value| is the new value being assigned to the accessor. If assignment fails set |exception| to the exception that will be thrown. Return true (1) if accessor assignment was handled.