wallDist: now a MeshObject cached and updated automatically with a run-time selected algorithm

When using models which require the wallDist e.g. kOmegaSST it will
request the method to be used from the wallDist sub-dictionary in
fvSchemes e.g.

wallDist
{
    method meshWave;
}

specifies the mesh-wave method as hard-coded in previous OpenFOAM versions.

tutorials/incompressible/SRFSimpleFoam/mixer/system/fvSchemes

@@ -60,5 +60,10 @@ fluxRequired
     p               ;
 }
 
+wallDist
+{
+    method meshWave;
+}
+
 
 // ************************************************************************* //

tutorials/incompressible/boundaryFoam/boundaryWallFunctionsProfile/system/fvSchemes

@@ -57,5 +57,10 @@ snGradSchemes
     default         corrected;
 }
 
+wallDist
+{
+    method meshWave;
+}
+
 
 // ************************************************************************* //

tutorials/incompressible/pimpleDyMFoam/wingMotion/wingMotion2D_pimpleDyMFoam/system/fvSchemes

@@ -57,4 +57,10 @@ fluxRequired
     p;
 }
 
+wallDist
+{
+    method meshWave;
+}
+
+
 // ************************************************************************* //

tutorials/incompressible/pimpleDyMFoam/wingMotion/wingMotion2D_simpleFoam/system/fvSchemes

@@ -56,4 +56,10 @@ fluxRequired
     p;
 }
 
+wallDist
+{
+    method meshWave;
+}
+
+
 // ************************************************************************* //

tutorials/incompressible/pimpleFoam/elipsekkLOmega/system/fvSchemes

@@ -62,5 +62,10 @@ fluxRequired
     p               ;
 }
 
+wallDist
+{
+    method meshWave;
+}
+
 
 // ************************************************************************* //

tutorials/incompressible/pisoFoam/les/motorBike/lesFiles/fvSchemes

@@ -64,4 +64,10 @@ fluxRequired
     p;
 }
 
+wallDist
+{
+    method meshWave;
+}
+
+
 // ************************************************************************* //

tutorials/incompressible/pisoFoam/les/motorBike/motorBike/system/fvSchemes

@@ -58,5 +58,10 @@ fluxRequired
     p               ;
 }
 
+wallDist
+{
+    method meshWave;
+}
+
 
 // ************************************************************************* //

tutorials/incompressible/simpleFoam/airFoil2D/system/fvSchemes

@@ -54,5 +54,10 @@ fluxRequired
     p               ;
 }
 
+wallDist
+{
+    method meshWave;
+}
+
 
 // ************************************************************************* //

tutorials/incompressible/simpleFoam/motorBike/system/fvSchemes

@@ -55,4 +55,10 @@ fluxRequired
     p;
 }
 
+wallDist
+{
+    method meshWave;
+}
+
+
 // ************************************************************************* //