Implement poly-kinded Typeable

This patch makes the Data.Typeable.Typeable class work with arguments of any
kind. In particular, this removes the Typeable1..7 class hierarchy, greatly
simplyfing the whole Typeable story. Also added is the AutoDeriveTypeable
language extension, which will automatically derive Typeable for all types and
classes declared in that module. Since there is now no good reason to give
handwritten instances of the Typeable class, those are ignored (for backwards
compatibility), and a warning is emitted.

The old, kind-* Typeable class is now called OldTypeable, and lives in the
Data.OldTypeable module. It is deprecated, and should be removed in some future
version of GHC.
Merge tag 'v0.5.2.1' of git://github.com/haskell/containers into ghc-head
Strict modules only strict in values inserted

Before all value arguments would be evaluated, now they are only
evaluated if they are actually inserted into the map.
Bump version number to 0.5.3.0
Remove redundant import
Merge GHC HEAD
Import warning fix for GHC 7.7

The unused import check is now more agressive so

    import Prelude hiding (foldr)

creates a warning if nothing from the Prelude is used.
Bump version number to 0.5.3.1
Add Functor instance to Data.Graph.SCC
Merge pull request #32 from alphaHeavy/scc-functor

Add Functor instance to Data.Graph.SCC
Merge branch 'master' of github.com:haskell/containers

Conflicts:
	containers.cabal