Rename DataEntry -> Function1

Function1 is an abstract base-class of run-time selectable unary
functions which may be composed of other Function1's allowing the user
to specify complex functions of a single scalar variable, e.g. time.
The implementations need not be a simple or continuous functions;
interpolated tables and polynomials are also supported.  In fact form of
mapping between a single scalar input and a single primitive type output
is supportable.

The primary application of Function1 is in time-varying boundary
conditions, it also used for other functions of time, e.g. injected mass
is spray simulations but is not limited to functions of time.

src/mesh/extrudeModel/radial/radial.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2013 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2013-2016 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -45,7 +45,7 @@ addToRunTimeSelectionTable(extrudeModel, radial, dictionary);
 radial::radial(const dictionary& dict)
 :
     extrudeModel(typeName, dict),
-    R_(DataEntry<scalar>::New("R", coeffDict_))
+    R_(Function1<scalar>::New("R", coeffDict_))
 {}
 
 

src/mesh/extrudeModel/radial/radial.H

@@ -32,7 +32,7 @@ Description
 #define radial_H
 
 #include "extrudeModel.H"
-#include "DataEntry.H"
+#include "Function1.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -51,7 +51,7 @@ class radial
 {
     // Private data
 
-        autoPtr<DataEntry<scalar>> R_;
+        autoPtr<Function1<scalar>> R_;
 
 
 public: