patch applied (ghc): Adding a GENERATED pragma

[Andy Gill]

Thu Dec 28 23:29:48 PST 2006  andy at galois.com
  * Adding a GENERATED pragma
  
  Adding a {-# GENERATED "SourceFile" SourceSpan #-} <expr> pragma.
  This will be used to generate coverage for tool generated (or quoted) code.
  The pragma states the the expression was generated/quoted from the stated
  source file and source span.
  

    M ./compiler/deSugar/Coverage.lhs -3 +10
    M ./compiler/deSugar/DsMeta.hs +1
    M ./compiler/hsSyn/HsExpr.lhs +6
    M ./compiler/parser/Lexer.x +3
    M ./compiler/parser/Parser.y.pp -1 +17
    M ./compiler/rename/RnExpr.lhs +3
    M ./compiler/typecheck/TcExpr.lhs +3
    M ./compiler/typecheck/TcHsSyn.lhs +4