patch applied (ghc): raise#: break *after* stripping the stack, not before

[Simon Marlow]

Wed May 16 06:35:03 PDT 2007  Simon Marlow <simonmar at microsoft.com>
  * raise#: break *after* stripping the stack, not before
  This means that thunks under evaluation will have been updated with
  the exception when we come to inspect them in GHCi.  Blackholes are
  much less friendly.

    M ./rts/Exception.cmm -23 +29