- export library path for gmp/mpfr from CGAL config files.
  This is required when non-system gmp/mpfr libraries are being
  used, but not using a ThirdParty compiler installation.

- automatically handle lib/ vs lib64/ (eg, for central installations)
  for packages such as boost, CGAL, etc. While the ThirdParty
  compilation of these will normally land in lib64/, this may not be
  the case when they are supplied by another means.

- reworked the handling of foamEtcFile and foamCleanPath for less
  clutter in the configuration files.
  Added the bin/tools/lib-dir script to handle logic that is
  too complex to easily manage in csh.

- can tag the version compatibility with a negative number to suppress
  the warnings but retain some information about which version was
  supported.

Simplify argList methods names and add more compat options

See merge request OpenFOAM-plus!188

- previously part of POSIX.C

- for tutorials that are known to run poorly, can provide a
  placeholder Allrun-optional instead of the usual Allrun script.
  If this is detected, the case will be skipped.

- can now be used as previously intended, since the scalarRange
  parsing has been fixed.

- can be used to handle when options become redundant, but it is
  undesirable to treat its presence as an error. Can now tag it as
  being ignored.

     argList::ignoreOptionCompat({"oldOption", 1706}, true);
     argList::ignoreOptionCompat({"oldBoolOpttion", 1706}, false);

     command  -oldOption xyz -oldBoolOpttion

- use succincter method names that more closely resemble dictionary
  and HashTable method names. This improves method name consistency
  between classes and also requires less typing effort:

    args.found(optName)        vs.  args.optionFound(optName)
    args.readIfPresent(..)     vs.  args.optionReadIfPresent(..)
    ...
    args.opt<scalar>(optName)  vs.  args.optionRead<scalar>(optName)
    args.read<scalar>(index)   vs.  args.argRead<scalar>(index)

- the older method names forms have been retained for code compatibility,
  but are now deprecated

- direct parsing of -funcs to ITstream.
- use direct lookup when the option is a word/string

- now avoid Istream and token mechanism in favour of a simpler string
  parser. This makes the code clearer, smaller, robuster.

- provide convenience ge/gt/le/lt static constructors for scalarRange
  for using bounds directly with specifying via a string parameter.

- scalarRange, scalarRanges now follow the unary predicate pattern
  (using an operator() for testing). This allows their reuse in
  other contexts. Eg, for filtering operations:

      myHash.filterValues(scalarRange::ge(100));

- remove unused scalarRanges methods that were specific to handling
  lists of time values. These were superseded by timeSelector methods
  several versions ago.

- caused by the removal of empty zones when reading the surface files

switch

The new lowReCorrection entry can be used to ensure that the low-Re
mode is only applied when its value is on/true, e.g.

    lowReCorrection      on;

When active, the low-Re mode is active when the local y+ is less than
the calculated y+_laminar.  When inactive, the high-Re form is employed
irrespectively of the local y+.

It has a defaulrt value of off/false for backwards compatibility with
OpenFOAM v1706

BUG: Fixing creating of turbulence after overset specific in createFields.H for overRhoPimpleDyMFoam