updated generated haskell code
updated generated haskell code

* new groupF code equation
* better handlich of Code_Char and Code_Target_* imports
  strings are now strings (not char lists)

diekmann/Iptables_Semantics,jcaesar/Iptables_Semantics,jcaesar/Iptables_Semantics,diekmann/Iptables_Semantics,diekmann/Iptables_Semantics,jcaesar/Iptables_Semantics