- the foamConfigurePaths script is quite simplistic and aggressive in
  what it changes. This was particularly evident when using it to
  change gcc/clang versions.

  Restructured the corresponding compiler settings to define default
  versions (eg, "default_gcc_version") that limits the scope of
  changes performed by foamConfigurePaths and makes it easier to
  understand if changing manually.

- the gcc c++/9 includes now inline strncpy, which obliterates
  the previous method of suppressing the warning.
  Now simply allocate additional space for the nul character.

COMP: silence some icc warnings

STYLE: add typedefs for interpolation tables

- indexing error in the output of values resulted in uniform output in
  most cases.

- allocation error for on-the-fly triangulation

ENH: changed decomposed storage from DynamicList to plain faceList for
clearer allocation control and better overhead

- we know they have already protected by an is_contiguous check,
  so the class-memaccess warning/error can be suppressed.

- The case files may contain #... comment lines
- The geometry file may contain an optional "extents" entry
- Properly handle element id specifications (off|assign|ignore|given).

- Partially handle node id specifications (off|assign|ignore|given).
  Treat "given" like "ignore", since results in the lightest amount of
  coding and in many cases the "given" node ids are in fact 1-based
  contiguous values and thus no different than "ignore" for our
  purposes.

ENH: downgrade error on type-mismatch to a warning

- Ensight data files generated by OpenFOAM will start with the name of
  the data type (Eg, "scalar", "vector" etc), but this convention may
  fail for data files that have been generated elsewhere.

BUG: RASModelVariables::SpalartAllmaras cannot be combined with an fvMotionSolver diffusivity which depends on wall distances (fixes #1501)

- wmake -version, --version option (alias for -show-api)
  for consistency with standard system tools

- triggers rpmlint warnings

Solve issue 1431 Gitlab. delta() calculation on the patch is consistent
with not applying non-orthogonality on the patch.

Fix gitlab #1423

Fix Gitlab issue #1423

- foamExec was removed as part of commit 6c68c34e but
  overlooked the fact that it is partly still needed by foamJob.
  When running in parallel, it is used to source the etc/bashrc env.

  Reinstated a stripped down form, which has been relocated to
  bin/tools directory (it should not be directly called by the user).

  The previous version switching functionality has nonetheless be
  dropped since it only worked only when a rigid naming convention for
  OpenFOAM installations was followed.

ENH: add foamJob log=, -log-app, -no-log options, improved coding quality