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ENH: use face::trianglesQuads() method for PV3FoamReader as well.
- this avoids missing faces (and weird cells) in the decomposed polyhedra.

- Include Sets/Zones now scans immediately to refresh the list of available
  mesh parts. Unfortunately, this also causes the object panel to be
  modified, even although the selection doesn't acutally need to change.
  This seems to be due to how the pqNamedWidgets are getting the information
  from the proxy properties. I can't figure if it's possible to acheive what
  I want, but we can probably live with the current implementation.

  After IncludeZones, simply us 'Reset' to undo the spurious GUI changes.
  Works fine - just looks a bit silly.

- Added 'Refresh' button to rescan for new times/fields.  Good for
  post-processing ongoing calculations without exiting the reader.

- Added 'Skip Zero Time' checkbox: many (some) calculations have
  data missing at time=0 (eg, rho, lagrangian, etc). This provides
  a convenient way to skip over this time.

- Future?:
  We could probably pick up favourite default values for these switches from
  ~OpenFOAM/controlDict, from a case system/paraview, or simply by making
  the casename.OpenFOAM also be an OpenFOAM dictionary with the settings.

- Show Point Numbers as is_internal="1" and hook directly into a QT-checkbox
  and thus bypass modifying the reader state.

- Same for Cache Mesh and Show Patch Names

- remove patch/point text labels upon deletion

- combined client/server plugin instead of separate .so files
  first experiment with adding panel decorations

- directory reorganization

  - remove TimeRange property from XML. Not needed for discrete time data
  - represent Lagrangian data as VTK_VERTEX for simple visualization

 - streamlined code somewhat, minor attempt to reclaim some memory
 - now use "mesh parts" for patches/zones/sets/etc throughout to avoid
   ambiguity with mesh regions
 - collect superCells and addPointCellLabels in a class. The old version
   actually seemed to have overwritten the addPointCellLabels with each
   cellSet/cellZone. This means that part of the pointFields would be trashed
   in the combination of polyhedral cells, cellSets/cellZones and internalMesh
 - polyDecomp information for muitiple mesh regions, but not yet exploited
 - pointFields now working for cellZones/cellSets
 - extroplating fields onto walls also works as expected for interpolated
   pointFields
 - added tooltips to reader GUI

TODO:
 - pointFields (real and interpolated) for faceSets/faceZones

  - various GUI properties are now animateable="0"
    (meaning they no longer show up on the time-line)
  - move reader switches to the bottom of the GUI
  - move Lagrangian fields above pointFields for better visibility
  - basic support for multiple clouds
  - filter fields based on selection before looping over all the geometry bits
  - mesh conversion functions now return VTK mesh types for easier handling
  - faceZones mesh conversion had points/faces allocation reversed
  - updateInfo with every call to setTime() that changes the timeIndex
    This seems to be the only way to notice Lagrangian fields
  - restore displaying patchnames that got forgotten in the last commit
  - misc reorganization

previous disabling of the TimeSelection arrays [commit c52b20b..]
resulted in the mesh caching being disabled :(

Simplified code is enabled/disabled by PV3FOAM_TIMESELECTION define.
Might be removed in the future.

- correct wmake options to pick-up the ParaView headers