patch applied (ghc-fc2): Option -findexed-types

[chak at cse.unsw.edu.au]

Fri Sep  8 18:35:37 PDT 2006  Manuel M T Chakravarty <chak at cse.unsw.edu.au>
  * Option -findexed-types
  - Introduced the switch -findexed-types to activate the indexed type family 
    framework.
  - The switch enables the special 'family' and allows kind signatures (which are
    currently compulsory for associated families).

    M ./compiler/main/DynFlags.hs -1 +4
    M ./compiler/parser/Lexer.x -4 +7
    M ./compiler/typecheck/TcTyClsDecls.lhs -5 +5