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

This appears to be a long-standing bug!?, since it was also in the
paraview-2 reader.

Some tools now output sets at the pointsInstance (if relating to geometry),
some at the facesInstance (if relating to topology).
So when loading them we now search for them from current time down
to facesInstance. They cannot be beyond facesInstance.
Adapted Time::findInstance to take optional limiting instance. Adapted
topoSet to use this. Adapted all uses of IOobjectList on sets to do the
same.

This comes up when displaying sets on moving meshes. The topology does not
change so the set should stay the same.

- 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.

- markup codingStyleGuide.org examples so they actually indent correctly

- use 'Info<<' as per codingStyleGuide instead of 'Info <<'

- 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

- apply scaleFactor (eg, mm->m) in PV3 reader - this looks better when
  overlaying with other objects

- stop segfault when paraview exits without deleting readers first

- remove patch/point text labels upon deletion

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

- directory reorganization

- first version. Only uses simple hex shapes for the blocks.

which need this functionality.  Solvers will now check the correctness of the BCs on
read.

- contains the name part of the FOAM_CASE environment variable

- using a filter such as clip-plane on a multi-port source causes
  inconsistent UPDATE_TIME_STEPS() on each port. This looks like a
  VTK/Paraview bug to me.
  Workaround: check both ports and take the first one that has a value
  different than the last time set.

- objectRegistry gets a rename() that also adjusts the dbDir
- cloud reworked to use static variables subInstance and defaultName.
  This avoids writing "lagrangian" everywhere

string fixes
- avoid masking of std::string::replace in string.H
- avoid old strstream in PV3FoamReader