- this function definition (as per the OpenFOAM functions) is required
  for compatibility when sourcing some config files (eg, mpi).

Final content for 1806 release

Closes #31 and #30

See merge request Development/ThirdParty-plus!6

- update BUILD.md to mention the possible build issues related to Qt.

- additional comments about using binaries for ParaView instead of
  building from source

- https://gitlab.kitware.com/paraview/paraview/merge_requests/2532

- bump ParaView to 5.5.2

- strip both prefix and suffix for VTK and ParaView builds

- add note about building older Qt

- resolve problem with working directory:

    Community/catalyst#4
    https://gitlab.kitware.com/paraview/paraview/merge_requests/2436

- https://gitlab.kitware.com/paraview/paraview/issues/18116

- removed foamToTecplot360 from the OpenFOAM source as not being
  reliably maintainable.

- some systems (eg, opensuse) use that since it has both qt4 and qt5
  installed. ParaView now needs qt5 (preferrably 5.9).

STYLE: update version information for ParaView and Qt

- only builds properly in serial.
  Allwmake adjusted accordingly, or simply build with '-j 1'

- potential symbol conflicts and build errors if building from the git
  version since it uses the last major number (eg, 5.4) but may have a
  layout similar to the next release (eg, 5.5) and thus different
  sizes for classes etc.

- document special steps for using ThirdParty mpfr/gmp with clang etc

- only export the WM_* settings to their plain counterparts

     (eg, export CC=$WM_CC)

  when they actually point to an accessible program

  This helps in particular when bootstrapping builds with third-party
  compilers.

Final content for 1712 release

Closes #20 and #18

See merge request Development/ThirdParty-plus!5

- the cray 'cc' handles mpi paths, there is no mpicc

ENH: add support of additional configure options to some make scripts

- remove hard-coded --verbs from makeOPENMPI in favour of letting the
  user provide it via the command-line for makeOPENMPI.

  eg,  makeOPENMPI openmpi-1.10.6 -- --with-verbs=DIRECTORY ...

COMP: VTK- prefix not being trimmed from the name

- made redundant by 19f241fa. Multiple threads are needed by the
  collated format and are now always enabled.

- previously explicitly disabled mpi-profiling, but now let openmpi
  configure it itself.

- add config support for mpi-threads