[tuples] C++: handle cleanups

[Diego Novillo]

On 10/18/07, Aldy Hernandez <aldyh@redhat.com> wrote:
> [Diego, I have made EXC_PTR_EXPR a RHS operand.  I hope this is ok.  We
> need this so we can pass the exception object to function calls.]

Yeah, if we need to keep these things for later, then making them
single operands is the best way to go.

> This patch makes cleanups work.  Well, as working as it can get, without
> being able to fully test.  It's mostly a conversion to tuples for
> cleanups.

Cool!