[project @ 2001-05-03 14:31:58 by simonmar]

[project @ 2001-05-03 14:31:58 by simonmar]
Arrange to call touch# on each ForeignObj# argument after a 'safe'
foreign import call.

This turned out to be the easiest place to implement it: if we'd done
it in CorePrep or CoreToStg, it would have been awkward to generate
the simplest code.  At least doing it in the desugarer gives the
simplifier a crack at it later.