ENH: add Xfer<> construction for indexedOctree components

src/meshTools/indexedOctree/indexedOctree.H

src/meshTools/indexedOctree/treeDataCell.C

src/meshTools/indexedOctree/treeDataCell.H

src/meshTools/indexedOctree/treeDataEdge.C

src/meshTools/indexedOctree/treeDataEdge.H

src/meshTools/indexedOctree/treeDataFace.C

src/meshTools/indexedOctree/treeDataFace.H

src/meshTools/indexedOctree/treeDataPoint.C

src/meshTools/indexedOctree/treeDataPoint.H

src/meshTools/indexedOctree/treeDataPrimitivePatch.C

src/meshTools/indexedOctree/treeDataPrimitivePatch.H

src/meshTools/indexedOctree/treeDataTriSurface.C

src/meshTools/indexedOctree/treeDataTriSurface.H