patch applied (ghc-fc2): Make sure ATs are included into the temporary env for tc knot tying

[chak at cse.unsw.edu.au]

Wed Aug 16 14:52:40 PDT 2006  Manuel M T Chakravarty <chak at cse.unsw.edu.au>
  * Make sure ATs are included into the temporary env for tc knot tying

    M ./compiler/main/HscTypes.lhs -3 +2
    M ./compiler/typecheck/TcTyClsDecls.lhs -16 +32