- now catch these and emit a warning.
  Still need to investigate the root cause in the caller(s) or regionSplit.

- the behaviour of std::rename with overwriting an existing file is
  implementation dependent:
    - POSIX: it overwrites.
    - Windows: it does not overwrite.

- for Windows need to use the ::MoveFileEx() routine for overwriting.

  More investigation is needed for proper handling of very long names.

- this cannot be left as a configurable value (on windows), since it
  needs to be enabled even prior to reading the etc/controlDict file,
  in case the OpenFOAM installation path itself contains spaces.

Modifications to help avoid inadvertent overwriting of tutorialsTest:

- new '-force' option to overwrite existing directory

- generate a 'tutorialsTest/Alltest' script that disallows the
  possibilty of self-recursion

- reverse mapping for the original point ids. This can be useful
  when searching a subset of points, but needing to store access to
  the original point index.

- move constructor.

- Allow use/not-use subset as an optional constructor argument for
  more convenient caller logic.

- mingw uses 32-bit long regardless of -m32 or -m64 setting

- when searching for a file that may not actually exist,
  the short-cut optimization could lead to the 'constant' directory
  being ignored.

STYLE: simplify logic in points0MotionSolver::points0IO

- the scotch interface still uses non-const pointers when passing in
  values. For the ConstPrecisionAdaptor this means that we need to cheat
  with a constCast(). Using ref() will rightly trigger complaints about
  trying to modify a const object.

BUG: DimensionedField - register new field if it does not have the same name as the copy - see #1348

- add PDRblockMeshDict example for cavity

- reduced clutter. Mostly only need to scan source tree.

- 00-dummy: use wmake/src/Allmake to get native (not cross-compiled)
  wmake toolchain binaries

- reduced clutter. Mostly only need to scan source tree.

- 00-dummy: use wmake/src/Allmake to get native (not cross-compiled)
  wmake toolchain binaries

- don't need extra nullptr check for some cases. Less clutter.

- changed for 1906 to have a regIOobject always cleanup its
  objectRegistry entry. No need to explicitly 'release' ownership
  for this to now happen.

- doxygen formatting for MeshObject

Caveat: The -Wdeprecated-copy produces many, many compiler warnings

TODO: need to revisit