- considered an error by the PGI compiler

- remove writeGeometry() in favour of write() and make it pure virtual
  so that all writers must explicitly deal with it.

- establish proxy extension at construction time and treated as an
  invariant thereafter. This avoids potentially surprising changes in
  behaviour when writing.

- incorrectly uses paraview include dirs instead of the more universal
  vtk include dirs for the MPI test.

- reduces output size, consistent with vtkWrite function object

STYLE: mark some foamToVTK options as advanced (ie, visible with -help-full)

- with -mcpu=native for automatic detection and -armpl for linking in
  the performance libraries

- also store empty sampled surfaces, otherwise we miss geometry updates.

- the automatic rounding avoids generation of negative zero values.
  For other exponent values it has no effect.

ENH: DEShybrid - added robustness for case that nuEff goes negative (typically from negative denisty in compressible cals).  See #1224

Also implements combination of -region and -dry-run

- had different spacing depending if defined from faces or shapes

- reinstates commit f7413b27 from history repository

- this is a simple container for fields with i-j-k addressing.

  It does not support field operations directly, but is primarily
  intended to be used when assembling field information with i-j-k
  logic. After assembly, the field can be transferred to a regular
  field for normal operations.  Eg,

      IjkField<scalar> assemble({15, 16, 200});

      // .. fill in i-j-k fields

      Field<scalar> final(std::move(assemble));
      assemble.clear();   // be pedantic
      ...

- While a rectilinear mesh can be created with blockMesh, not every mesh
  created with blockMesh will satisfy the requirements for being a
  rectilinear mesh.

  This alternative to blockMesh uses a single block that is aligned
  with the xy-z directions and specifications of the control points,
  mesh divisions and expansion ratios. For example,

    x
    {
        points  ( -13.28 -0.10 6.0 19.19 );
        nCells  (  10  12 10 );
        ratios  ( 0.2   1  5 );
    }

    y { ... }
    z { ... }

  With only one block, the boundary patch definition is simple and the
  canonical face number is used directly. For example,

    inlet
    {
        type    patch;
        faces   ( 0 );
    }
    outlet
    {
        type    patch;
        faces   ( 1 );
    }

    sides
    {
        type    patch;
        faces   ( 2 3 );
    }

    ...

- After a mesh is defined, it is trivial to retrieve mesh-related
  information such as cell-volume, cell-centres for any i-j-k location
  without an actual polyMesh.

STYLE: remove -noFunctionObjects from blockMesh

- no time loop, so function objects cannot be triggered anyhow.

- can be useful for 2D mesh dimensioning or possibly for matrices

- PtrList::release() method.

  Similar to autoPtr and unique_ptr and clearer in purpose than
  using set(i,nullptr)

- Construct from List of pointers, taking ownership.

  Useful when upgrading code. Eg,

     List<polyPatch*> oldList = ...;
     PtrList<polyPatch> newList(oldList);
     ...

BUG: incorrect resizing method names (PtrDynList) in previously unused code

- this functionality was originally added to allow sampling of volume
  fields onto a surface in order to perform calculations on them.

  However, the sampling framework essentially mirrored the
  sampledSurface, but was less complete.

  It is now possible to store sampled surfaces on a registry and
  do calculation with their fields. This is the preferred method,
  and thus removing the surfMeshSample duplicate code.

- previously wrapped raw points/faces with a meshedSurfRef on input,
  but now handle the raw -> meshedSurf logic directly within
  surfaceWriter to avoid holding references to temporaries

  Since the updated meshedSurfRef is now modifiable, it can be used
  directly as a redirection mechanism within surfaceWriter.

- add explicit close() in destructor

- construct null, clear() and reset() methods

- removes a layer of opacity and may help with future restructuring

- add output verbosity in debug mode

- sorted field names for consistency, remove some local variables

- A negative expansion ratio is geometrically invalid and will
  normally cause issues (FatalError).
  However, we can trap this type of input and interpret it as the
  inverse expansion ratio - ie, the expansion ratio in the opposite
  direction. This can be especially convenient when generating a blockMesh
  with a symmetrical expansion. It permits using the same expansion
  ratio (with a sign change) instead of providing the reciprocal values
  manually.

COMP: revert demand-driven point creation in blockMesh (db9b35b5)

- appears to have caused a dangling reference on some systems

ENH: add a lightweight ijkAddressing class

- it can be used for an i-j-k to linear lookup of meshes or fields,
  where applicable.

and reading dpdt in one basicThermo constructor