ENH: pimpleDyMFoam: Improved efficiency and consistency when running on a static mesh

Now pimpleDyMFoam is exactly equivalent to pimpleFoam when running on a
staticFvMesh.  Also when the constant/dynamicMeshDict is not present a
staticFvMesh is automatically constructed so that the pimpleDyMFoam solver can
run any pimpleFoam case without change.

pimpleDyMFoam: Store Uf as an autoPtr for better error handling

pimpleFoam: Set initial deltaT from the Courant number

for improved stability on start-up and compatibility with pimpleDyMFoam

ENH: pimpleFoam: Merged dynamic mesh functionality of pimpleDyMFoam into pimpleFoam

and replaced pimpleDyMFoam with a script which reports this change.

The pimpleDyMFoam tutorials have been moved into the pimpleFoam directory.

This change is the first of a set of developments to merge dynamic mesh
functionality into the standard solvers to improve consistency, usability,
flexibility and maintainability of these solvers.

Henry G. Weller
CFD Direct Ltd.

tutorials/incompressible/pimpleFoam: Updated pimpleDyMFoam tutorials to run pimpleFoam

Renamed tutorials/incompressible/pimpleFoam/RAS/wingMotion/wingMotion2D_pimpleDyMFoam

-> tutorials/incompressible/pimpleFoam/RAS/wingMotion/wingMotion2D_pimpleFoam

bin/mergedDyM

@@ -0,0 +1,38 @@
+#!/bin/sh
+#------------------------------------------------------------------------------
+# =========                 |
+# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+#  \\    /   O peration     |
+#   \\  /    A nd           | Copyright (C) 2017 OpenFOAM Foundation
+#    \\/     M anipulation  |
+#-------------------------------------------------------------------------------
+# License
+#     This file is part of OpenFOAM.
+#
+#     OpenFOAM is free software: you can redistribute it and/or modify it
+#     under the terms of the GNU General Public License as published by
+#     the Free Software Foundation, either version 3 of the License, or
+#     (at your option) any later version.
+#
+#     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+#     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+#     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+#     for more details.
+#
+#     You should have received a copy of the GNU General Public License
+#     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Script
+#     supersededByPostProcess
+#
+# Description
+#     Script to suggest using the new "postProcess" utility.
+#
+#------------------------------------------------------------------------------
+DyMsolver=${0##*/}
+solver=$(echo $DyMsolver | sed 's/DyM//')
+
+echo "The dynamic mesh functionality in $DyMsolver has been merged into $solver"
+echo "and the $DyMsolver tutorials moved into the $solver tutorials directory"
+
+#------------------------------------------------------------------------------