Master update for adjusted config and compile with WM_LABEL_SIZE=64



See merge request !52

- explicitly use List<int> instead List<label> for API compatibility,
  even when 64-bit labels are in use.

- many systems may not have boost or FFTW installed, or in an older
  version. Using ThirdParty for them should lead to a more robust
  build process.

- triggered by dash.

- the uncollated version becomes quite difficult to process.

  Caveat: cannot use "collateTimes true" for non-static geometries

- conflicts resolved:
    src/conversion/ensight/file/ensightGeoFile.C

- regression introduced by ef9a14b2

- similar to foamToEnsightParts, provide a data/ subdirectory to hold
  the time-varying field information (collated output only).

- widen data mask to avoid possible overflows with many time steps

- ensight does supports geometry in a separate file, but for the
  surface writer we claim that this is not true. This allows
  the field writers to control where the mesh/case files land.

  With 'true', the uncollated output would incidentally create
  things like this:

  Previous (w/ fields)        | Now (w/ fields)
  ----------------------------+----------------------
    0.05/surf.case            |
    0.05/surf.mesh            |
    0.05/p/surf.case          |  0.05/p/surf.case
    0.05/p/surf.mesh          |  0.05/p/surf.mesh
    0.05/p/surf.0000.p        |  0.05/p/surf.0000.p

  Previous (w/o fields)       | Now (w/o fields)
  ----------------------------+----------------------
    0.05/surf.case            | 0.05/surf.mesh
    0.05/surf.case            | 0.05/surf.mesh

  Move the separateGeometry() flag to the *.C code, where it is less
  likely to be mistakenly altered.

Feature noise

New functionality includes:
- run-time selectable noise models: point|surface
- run-time selectable window models: Hanning (+ options symmetric, extended), uniform
- calculates PSD (Pa^2/Hz) and dB/HZ; SPL (Pa^2) and dB
- calculates 1/3 octave data, with centre frequency 1kHz

surfaceNoise only:
- reads ascii/binary ensight surface data (requires collateTimes option)
- generates graphs for surface average quantities
- operates in parallel

See merge request !50

Related to #132.

- gcc/g++ always being used

STYLE: spurious unsetenv WM_COMPILER_TYPE (csh only)

- more stringent cleanup of ThirdParty settings for wmUNSET

- better cleanup, avoid collisions between implicit and explicit cases