patch applied (ghc-fc2): Added error checks & fixed bugs

[chak at cse.unsw.edu.au]

Thu Aug  3 16:29:38 PDT 2006  Manuel M T Chakravarty <chak at cse.unsw.edu.au>
  * Added error checks & fixed bugs

    M ./compiler/hsSyn/HsDecls.lhs -4 +4
    M ./compiler/parser/Parser.y.pp +1
    M ./compiler/parser/RdrHsSyn.lhs -1 +13
    M ./compiler/rename/RnNames.lhs -4 +5
    M ./compiler/rename/RnSource.lhs -11 +28