Resolves bug-report http://bugs.openfoam.org/view.php?id=2264

Patch contributed by Mattijs Janssens
Resolves bug-report http://bugs.openfoam.org/view.php?id=1815

Resolves bug-report http://bugs.openfoam.org/view.php?id=2239

linearUpwind: Evaluate the gradient of each component of the field to provide support all field types

Also reduces peak-storage as it now generates a volVectorField for each component
rather than the gradient of the field type.

derivative of the stress tensor.  See
http://en.wikipedia.org/wiki/Upper-convected_Maxwell_model

The model includes an additional viscosity (nu) from the transport
model from which it is instantiated, which makes it equivalent to the
Oldroyd-B model for the case of an incompressible transport model.
See https://en.wikipedia.org/wiki/Oldroyd-B_model

Renamed the original 'laminar' model to 'Stokes' to indicate it is a
linear stress model supporting both Newtonian and non-Newtonian
viscosity.

This general framework will support linear, non-linear, visco-elastic
etc. laminar transport models.

For backward compatibility the 'Stokes' laminar stress model can be
selected either the original 'laminar' 'simulationType'
specification in turbulenceProperties:

    simulationType laminar;

or using the new more general 'laminarModel' specification:

    simulationType laminar;

    laminar
    {
        laminarModel        Stokes;
    }

which allows other laminar stress models to be selected.

solvers: Moved createRDeltaT.H into createFields.H so that it is available with the -postProcess option

Required to support LTS with the -postProcess option with sub-models dependent on ddt
terms during construction, in particular reactingTwoPhaseEulerFoam.

Individual inward-pointing faces are checked and if all faces are
inward-pointing the block is inside-out.  These errors are fatal and the
message indicates which block the error occurs in and where in the
blockMeshDict the block is defined.

Patch proveded by Alexey Matveichev
Resolves bug-report http://bugs.openfoam.org/view.php?id=2229

Resolves bug-report http://bugs.openfoam.org/bug_change_status_page.php

Resolves bug-report http://bugs.openfoam.org/view.php?id=2248

Patch provided by Mattijs Janssens
Resolves bug-report http://bugs.openfoam.org/view.php?id=2226

Now works correctly for an arbitrary number of bodies
Resolves bug-report http://bugs.openfoam.org/view.php?id=2211

rigidBodyMeshMotionSolver: experimental nDoF mesh-motion solver supporting the displacement-based elliptic solvers

Specification for the tutorials/multiphase/interDyMFoam/ras/floatingObject case:

dynamicFvMesh       dynamicMotionSolverFvMesh;

motionSolverLibs   ("librigidBodyMeshMotion.so" "libfvMotionSolvers.so");

solver             rigidBodyMotionSolver;

rigidBodyMotionSolverCoeffs
{
    report          on;

    meshSolver
    {
        solver displacementLaplacian;

        displacementLaplacianCoeffs
        {
            diffusivity inverseDistance (floatingObject);
        }
    }
.
.
.

Resolves bug-report http://bugs.openfoam.org/view.php?id=2244

Renamed 'omega' to 'FSDomega' to avoid a clash with the k-omega
turbulence models.

Resolves bug-report http://bugs.openfoam.org/view.php?id=2237

Patch provided by Mattijs Janssens
Resolves bug-report http://bugs.openfoam.org/view.php?id=2240

Patch contributed by Mattijs Janssens

Now the postProcess utility '-region' option works correctly, e.g. for
the chtMultiRegionSimpleFoam/heatExchanger case

postProcess -region air -func "mag(U)"

calculates 'mag(U)' for all the time steps in region 'air'.

Resolves bug-report http://bugs.openfoam.org/view.php?id=2236

Patch provided by Mattijs Janssens
Resolves bug-report http://bugs.openfoam.org/view.php?id=2226

algebraicPairGAMGAgglomeration: agglomerate based on the maximum of the upper and lower coefficients
Patch provided by Mattijs Janssens
Resolves bug-report http://bugs.openfoam.org/view.php?id=2234

Patch provided by Bruno Santos
Resolves bug-report http://bugs.openfoam.org/view.php?id=2051