- removed operator* in favour of operator() for consistency with tmp
    class. The previous use of operator() for const casting didn't work
    anyhow due to template confusion.
  - added xferCopy(), xferMove() and xferTmp() template functions instead
  - preliminary changes to IOobjects and Fields for xfer

Conflicts:

	src/OpenFOAM/containers/misc/xferI.H
	src/OpenFOAM/fields/tmp/refCount.H
	src/OpenFOAM/memory/refCount/refCount.H
	src/OpenFOAM/memory/xfer/xferI.H
	src/finiteVolume/fvMesh/extendedStencil/extendedCentredStencil.C
	src/finiteVolume/fvMesh/extendedStencil/faceStencil/faceEdgeCellStencil.H

  - consistent constructors and consistent behaviour with MUST_READ,
    READ_IF_PRESENT

  - setSize(const label)
    * When the new size is greater than the addressed list size, the allocated
      list sizes is adjusted and the addressed size does not change.
    * Otherwise the addressed list size is just reduced and the allocated
      size does not change. inline void setSize(const label);

  - setSize(const label, const T&)
    Disabled, since the usefulness and semantics are not quite clear

  - operator=(const T&)
    should not affect the allocated size (BUGFIX)