- The null constructor already creates a dimensionless Zero,
  but named "undefined".

  Provide an constructor for a dimensioned Zero,
  but named "0" for universal clarity to its value.

- test clearly shows failure to insert a sub-registry when it has
  the same name as one of the parent sub-registry.

- the user might otherwise be unaware of the changed location

- both are typedefs for UList<label>

- was using direct face ids instead of appropriate sub-lists
- also removed typo that wasn't helping much either

- remove remnant nullptr check

- vtkkwiml headers use old-style casts, so reduce compile-time warnings

- newer versions of paraview build fine, and so do the reader modules,
  but the reader modules won't load (need to upgrade the classes).

- now that adios_config flags are largely working in ThirdParty

STYLE: only use paraview settings when actually available

- this means executing makeParaView prior to building OpenFOAM itself,
  but is consistent with the instructions given by makeParaView,
  and elminates anticipating the source location from the paraview
  config file, which increases the build flexibilty for ThirdParty

Feature noise multiple files

Enabled pointNoise and surfaceNoise models to operate on multiple input files
- For each model, the files should be specified by the `inputFiles` keyword
- When applied to pointNoise, the file is no longer required when specifying the CSV input data
- the singular `inputFile` entry is still available to the surfaceNoise model for backwards compatibilty

See merge request !80

Function objects - ensure objects are up-to-date when writing

See merge request !79

This reverts commit c554dc7b.

Functionality available in more general change in commit fb783789

- support gperftools-none, gperftools-system configurations
  as per other third-party packages.

STYLE: clean up more environment variables

CONFIG: testing adios rule

- these directories are sometimes used for a central, non-thirdparty, non-system
  installation

- leave gmp and mpfr as is, since it is not clear how these would interact with system
  versions

- only occurs in combination with distributedTriSurfaceMesh in snappy.

- workaround similar to that previously used for surfaceRedistributePar
  (issue #60).

Minor adjustment of incompressible motorBike tutorial to detect use of
distributedTriSurfaceMesh.

- there was a slight mix of MUST_READ and MUST_READ_IF_MODIFIED
  but with no obvious code to handle runtime modified values
  of the decomposition, or how this works with alternative
  dictionaries.

* boost 1_62_0 (Sept 2016)

* CGAL 4.9 (Sept 2016)
  - now has headers-only mode that could be interesting

* FFTW 3.3.5 (Jul 2016)

* openmpi 1.10.4 (Sept 2016)
  - the first openmpi 2.x release is also available, but too early to switch

* paraview 5.2.0 (Nov 2016)
  - builds without additional patching

STYLE: removed unneeded CMake environment variables