ENH: remove reliance on the Xfer class (issue #639)

This class is largely a pre-C++11 holdover. It is now possible to
simply use move construct/assignment directly.

In a few rare cases (eg, polyMesh::resetPrimitives) it has been
replaced by an autoPtr.

applications/test/IndirectList/Test-IndirectList.C

@@ -95,7 +95,7 @@ int main(int argc, char *argv[])
 
     inplaceReverseList(addresses);
 
-    idl1.resetAddressing(addresses.xfer());
+    idl1.resetAddressing(std::move(addresses));
 
     printInfo(idl1);