Don't swallow exceptions if a save point release causes an exception

[jfischoff]

It is possible we can have a error that needs to get thrown from setup and an exception that should get thrown from releasing a save point in the finally clause. We should throw both exceptions. We need a type like

data TwoExceptions = TwoExceptions SomeException SomeException

but with a better name.

We will need to rework the code to handle this ... assuming it is possible.