C++11 conformance and consistency: Added "move" constructors and assignment operators to OpenFOAM containers

Replaced all uses of complex Xfer class with C++11 "move" constructors and
assignment operators.  Removed the now redundant Xfer class.

This substantial changes improves consistency between OpenFOAM and the C++11 STL
containers and algorithms, reduces memory allocation and copy overhead when
returning containers from functions and simplifies maintenance of the core
libraries significantly.

applications/utilities/parallelProcessing/reconstructParMesh/reconstructParMesh.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2018 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2019 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -673,9 +673,9 @@ int main(int argc, char *argv[])
                                 runTime,
                                 IOobject::NO_READ
                             ),
-                            xferCopy(pointField()),
-                            xferCopy(faceList()),
-                            xferCopy(cellList())
+                            pointField(),
+                            faceList(),
+                            cellList()
                         )
                     );