Patches contributed by Mattijs Janssens:

splitMeshRegions: handle flipping of faces for surface fields

subsetMesh: subset dimensionedFields

decomposePar: use run-time selection of decomposition constraints. Used to
    keep cells on particular processors. See the decomposeParDict in

$FOAM_UTILITIES/parallel/decomposePar:
  - preserveBaffles: keep baffle faces on same processor
  - preserveFaceZones: keep faceZones owner and neighbour on same processor
  - preservePatches: keep owner and neighbour on same processor. Note: not
    suitable for cyclicAMI since these are not coupled on the patch level
  - singleProcessorFaceSets: keep complete faceSet on a single processor
  - refinementHistory: keep cells originating from a single cell on the
    same processor.

decomposePar: clean up decomposition of refinement data from snappyHexMesh

reconstructPar: reconstruct refinement data (refineHexMesh, snappyHexMesh)

reconstructParMesh: reconstruct refinement data (refineHexMesh, snappyHexMesh)

redistributePar:
  - corrected mapping surfaceFields
  - adding processor patches in order consistent with decomposePar

argList: check that slaves are running same version as master

fvMeshSubset: move to dynamicMesh library

fvMeshDistribute:
  - support for mapping dimensionedFields
  - corrected mapping of surfaceFields

parallel routines: allow parallel running on single processor

Field: support for
  - distributed mapping
  - mapping with flipping

mapDistribute: support for flipping

AMIInterpolation: avoid constructing localPoints

applications/utilities/parallelProcessing/decomposePar/decomposePar.C

@@ -96,6 +96,7 @@ Usage
 #include "fvFieldDecomposer.H"
 #include "pointFieldDecomposer.H"
 #include "lagrangianFieldDecomposer.H"
+#include "decompositionModel.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -260,7 +261,8 @@ int main(int argc, char *argv[])
             ++nProcs;
         }
 
-        // get requested numberOfSubdomains
+        // get requested numberOfSubdomains. Note: have no mesh yet so
+        // cannot use decompositionModel::New
         const label nDomains = readLabel
         (
             IOdictionary
@@ -819,16 +821,6 @@ int main(int argc, char *argv[])
 
                 processorDb.setTime(runTime);
 
-                // remove files remnants that can cause horrible problems
-                // - mut and nut are used to mark the new turbulence models,
-                //   their existence prevents old models from being upgraded
-                {
-                    fileName timeDir(processorDb.path()/processorDb.timeName());
-
-                    rm(timeDir/"mut");
-                    rm(timeDir/"nut");
-                }
-
                 // read the mesh
                 if (!procMeshList.set(proci))
                 {