solvers::solidDisplacement: New solver module for solid stress analysis

executed with foamRun for single region simulations of foamMultiRun for
multi-region simulations.  Replaces solidDisplacementFoam and
solidEquilibriumDisplacementFoam and all the corresponding tutorials have been
updated and moved to tutorials/modules/solidDisplacement.

Class
    Foam::solvers::solidDisplacement

Description
    Solver module for steady or transient segregated finite-volume solution of
    linear-elastic, small-strain deformation of a solid body, with optional
    thermal diffusion and thermal stresses.

    Solves for the displacement vector field D, also generating the stress
    tensor field sigma, including the thermal stress contribution if selected.

SourceFiles
    solidDisplacement.C

tutorials/modules/solidDisplacement/beamEndLoad/system/fvSchemes

@@ -0,0 +1,48 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     | Website:  https://openfoam.org
+    \\  /    A nd           | Version:  dev
+     \\/     M anipulation  |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+d2dt2Schemes
+{
+    default         steadyState;
+}
+
+gradSchemes
+{
+    default         Gauss cubic;
+}
+
+divSchemes
+{
+    default         Gauss cubic;
+}
+
+laplacianSchemes
+{
+    default         Gauss linear uncorrected;
+}
+
+interpolationSchemes
+{
+    default         cubic;
+}
+
+snGradSchemes
+{
+    default         uncorrected;
+}
+
+
+// ************************************************************************* //