[C2hs] patch applied (c2hs): Support for *- out marshallers

[chak at cse.unsw.edu.au]

Sat Sep  2 06:21:22 PDT 2006  Einar Karttunen <ekarttun at cs.helsinki.fi>
  * Support for *- out marshallers
  
  Implement *- out marshallers that are a monadic
  action but their return values are ignored. This
  is very useful for converting error codes into
  exceptions.

    M ./c2hs/chs/CHS.hs -4 +8
    M ./c2hs/gen/GenBind.hs -7 +11
    M ./doc/c2hs/c2hs.sgml -2 +6