freeHaskellFunctionPtr

I propose to deprecate `freeHaskellFunctionPtr' in Foreign. Equivalent functionality is now available from `Ptr.freeHaskellFunPtr'. Normally, we have all `Ptr' functionality also in a variant for `Addr', but in this case, this doesn't make sense in my opinion. The reason is that `Addr' is there as a backup solution when `Ptr' doesn't fit. But if a `Addr' is used to represent a Haskell function pointer, I don't see a reason that `Ptr.FunPtr' could not have been taken. If there are no objections, I will deprecate `freeHaskellFunctionPtr' in `Foreign'. Cheers, Manuel PS: It could be argued that `Ptr ()' can always be used instead of `Addr' and that therefore we should do away with `Addr' altogether. Opinions?