rhoSimpleFoam: Added "consistent" option to replace rhoSimplecFoam

See tutorials/compressible/rhoSimpleFoam/squareBend

SIMPLE
{
    nNonOrthogonalCorrectors 0;
    rhoMin          0.1;
    rhoMax          1.0;
    transonic       yes;
    consistent      yes;

    residualControl
    {
        p               1e-3;
        U               1e-4;
        e               1e-3;

        // possibly check turbulence fields
        "(k|epsilon|omega)" 1e-3;
    }
}

relaxationFactors
{
    fields
    {
        p               1;
        rho             1;
    }
    equations
    {
        p               1;
        U               0.9;
        e               0.9;
        k               0.9;
        epsilon         0.9;
    }
}

tutorials/compressible/rhoSimpleFoam/squareBend/constant/polyMesh/boundary

@@ -0,0 +1,41 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       polyBoundaryMesh;
+    location    "constant/polyMesh";
+    object      boundary;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+3
+(
+    Default_Boundary_Region
+    {
+        type            wall;
+        inGroups        1(wall);
+        nFaces          22400;
+        startFace       324400;
+    }
+    inlet
+    {
+        type            patch;
+        nFaces          400;
+        startFace       346800;
+    }
+    outlet
+    {
+        type            patch;
+        nFaces          400;
+        startFace       347200;
+    }
+)
+
+// ************************************************************************* //

tutorials/compressible/rhoSimpleFoam/squareBend/system/fvSolution

@@ -54,6 +54,7 @@ SIMPLE
     rhoMin          0.1;
     rhoMax          1.0;
     transonic       yes;
+    consistent      yes;
 
     residualControl
     {