Allow construction of an AutoDiffLocalParameterization with a functor.

- Previously AutoDiffLocalParameterization would internally instantiate
  a functor instance whenever one was required.  This prohibits the
  user passing arguments to the constructor of the functor.
- Now AutoDiffLocalParameterization can take over ownership of an
  allocated functor which the user created.  This mimics the behaviour
  of AutoDiffCostFunction.

Change-Id: I264e1face44ca5d5e71cc20c77cc7654d3f74cc0