- Added quoting to handle spaces in environment values in commit 50852b33
  (#1007, #1008). However, quoting is only needed for eval mode.

  In regular mode, quoting should not be part of the output, instead it
  should be done on the caller side.

Feature vtm/vtk

See merge request OpenFOAM-plus!213

- can be used, for example, to visualize all wall cells - for quality
  or other purposes - without requiring an intermediate faceSet for
  the selection. Request arising from pending merge !213.

- shortcut for "clear" + "add".

  At the end of the operation, only parcels matching that particular
  selection source will be used.

- now supports a parcel selection mechanism like vtkCloud,
  giving the ability to select a subset of parcels.
  For example, a given stride, or removal of parcels with a small
  diameter.

  Eg,
      dataCloud output Time: 3.2
      Applying parcel filtering to 994 parcels
      - add stride 4
      - subtract field U : (less 0.2)
      After filtering using 214/994 parcels

- add output precision control for dataCloud

- this would automatically change openfoam<digits> into maj.min.rel
  values, thus transforming openfoam1806 into a version "1.8.0.6" !

- provide edit for adjusting the ThirdParty and fallback site variables.
  This is useful when packaging into a single directory, and possibly
  without any ThirdParty dependencies.

- support '-prefix' (similar to auotconfig) as an alternative to
  '-foamInstall'. Use this prefix to set the prefix directly.
  Bypasses and disables the bash sourcing magic.

- vtkWrite with moving mesh was not updated the subsets properly,
  which caused it to crash.

- foamToVTK -overwrite ignored for single region cases,
  was working for multi-region cases

- minor documentation changes

- Within strings it is preferable to use the "<etc>" instead.
  Most use cases for the old "~OpenFOAM" expansion have been obsoleted
  by the #includeEtc directive.

- use std::string instead of c-string for the string constants

- centralize some definitions of resources into foamVersion.H

  Now expose some of the hard-coded values used in foamEtcFiles()
  so that they can be known or even overridden as required.

  Relocate to src/OpenFOAM/include as a constant location.

- uses wmake, without OpenFOAM libraries.

  The application and libray serve as a minimal test case for wmake,
  but can also be used to generate a minimal library/executable pair
  target for testing of packaging etc.

- file is to be sourced, non-executable.

- remove stray .keep file from tutorial case

- Prefer the $WM_PROJECT_VERSION from the environment, since this
  is consistent with the foamEtcFile script, and matches better to
  user expectations.

- For compatibility, access to the old global names is provided via
  macros
        #define FOAMversion     foamVersion::version
        #define FOAMbuild       foamVersion::build
        #define FOAMbuildArch   foamVersion::buildArch

- this isolation makes it easier to provide additional scoped methods
  for dealing with version related information.  Eg, printBuildInfo()

- foamVersion.H now includes stdFoam.H for consistent use
  of compatibility compiler defines.

- move forward declaration of Detail, Module namespaces to stdFoam.H

- doxygen documentation of Foam namespace in stdFoam.H

- convenient when bootstrapping some systems

- generalize output text wrapping, use for usage notes

- add -help-man option for generating manpage content for any OpenFOAM
  application or solver.

  bin/tools/foamCreateManpage as helper

- Catch any leading option (the incorrect location).
- Catch initialization error for cleaner result.

- The changes in foamCleanPath introduced for issues (#1007, #1008)
  include quoted output of the cleaned environment variable.
  When used in foamCreateModuleInclude, the quotes make their way
  into the final environment. Avoid this by using the -sh-env
  eval format instead.

- add environment extraction of MANPATH changes

- more filtering in the sed stage to remove non-essential text.
  Terminate parsing on first appearance of -help-full option.

- have -help-full as the last entry in the list of options.
  This permits some optimizations when generating shell completions.

- provides some feedback about which mpi is being used