- handling of dead links (find -L -delete unsupported)

- remove ignore case flag on 's/../../i' used in have_scotch script.
  It is unneeded and not tolerated by Darwin's sed.

- avoid embedded comments in EXE_INC (Make/options files), which do
  not work well with the OSX LLVM cpp.
  It strips out the comments but also removes the continuation char.

STYLE: adjust notes about paraview library locations

- size ambiguity for Foam::min(string::size_type, label)

- stream operators for int16/uint16 which are needed for mode_t (Darwin)

- was somewhat redundant in wmake/rules/General/general anyhow

- generalize some of the library extensions (.so vs .dylib).
  Provide as wmake 'sysFunctions'

- added note about unsupported/incomplete system support

- centralize detection of ThirdParty packages into wmake/ subdirectory
  by providing a series of scripts in the spirit of GNU autoconfig.
  For example,

      have_boost, have_readline, have_scotch, ...

  Each of the `have_<package>` scripts will generally provide the
  following type of functions:

      have_<package>          # detection
      no_<package>            # reset
      echo_<package>          # echoing

  and the following type of variables:

      HAVE_<package>          # unset or 'true'
      <package>_ARCH_PATH     # root for <package>
      <package>_INC_DIR       # include directory for <package>
      <package>_LIB_DIR       # library directory for <package>

  This simplifies the calling scripts:

      if have_metis
      then
          wmake metisDecomp
      fi

  As well as reducing clutter in the corresponding Make/options:

      EXE_INC = \
          -I$(METIS_INC_DIR) \
          -I../decompositionMethods/lnInclude

      LIB_LIBS = \
          -L$(METIS_LIB_DIR) -lmetis

  Any additional modifications (platform-specific or for an external build
  system) can now be made centrally.

- permits platform-specific override of the general CGAL rules

- also simplify parsing by accepting any case on keywords.
  This implies that something like "sOlId", "SoLiD" will also
  be accepted. Although nobody should really count on this rather
  generous behaviour, it does simplfy the state machine even further.

- the previous grammar used

      '/*' { fgoto comment; }

  to start processing multi-line comments and

      comment := any* :>> '*/' @{ fgoto main; };

  as a finishing action to return to normal lexing, but seemed not to
  have been triggered properly.

  Now simply trap in a single rule:

      '/*' any* :>> '*/';             # Multi-line comment

STYLE: use more compact dnl (delete to newline)

  OLD:   [^\n]* '\n'
  NEW:   (any* -- '\n') '\n'

  eliminates the intermediate state

- the API-versioned calls (eg, tecini142, teczne142, tecpoly142, tecend142),
  the limited availability of the SDK and lack of adequate testing make
  proper maintenance very difficult.

- in debug, also report the first 10 cell ids

- format header documentation

- these errors are mostly rounding related (when a point is located on
  the edge of a bounding box instead of being fully inside it).

  For debug > 1, continue to treat as fatal.

- also see issue #793 (paraview version)

Style iostream option

See merge request OpenFOAM-plus!199

- IOstreamOption class to encapsulate format, compression, version.
  This is ordered to avoid internal padding in the structure, which
  reduces several bytes of memory overhead for stream objects
  and other things using this combination of data.

  Byte-sizes:
      old  IOstream:48  PstreamBuffers:88  Time:928
      new  IOstream:24  PstreamBuffers:72  Time:904

====

STYLE: remove support for deprecated uncompressed/compressed selectors

In older versions, the system/controlDict used these types of
specifications:

    writeCompression uncompressed;
    writeCompression compressed;

As of DEC-2009, these were deprecated in favour of using normal switch
names:

    writeCompression true;
    writeCompression false;
    writeCompression on;
    writeCompression off;

Now removed these deprecated names and treat like any other unknown
input and issue a warning. Eg,

   Unknown compression specifier 'compressed', assuming no compression

====

STYLE: provide Enum of stream format names (ascii, binary)

====

COMP: fixed incorrect IFstream construct in FIREMeshReader

- spurious bool argument (presumably meant as uncompressed) was being
  implicitly converted to a versionNumber. Now caught by making
  IOstreamOption::versionNumber constructor explicit.

- bad version specifier in changeDictionary

- affected csh users

- adjusted grammar to be more precise

- In addition to the traditional Flex-based parser, added a Ragel-based
  parser and a handwritten one.

  Some representative timings for reading 5874387 points (1958129 tris):

      Flex   Ragel   Manual
      5.2s   4.8s    6.7s         total reading time
      3.8s   3.4s    5.3s         without point merging

- better naming consistency with std::regex_constants::icase

- deprecate older NOCASE, but leave supported

- now uses current OpenFOAM code level

- added initial catalyst script for insitu processing of overset