GitLab

COMP: provide separate get_pvplugin_api function

- building plugins with paraview-5.7 is quite different

- removed reliance on ParaView_INCLUDE_DIR variable for conveying the
  major.minor version information when compiling. This can be somewhat
  fragile and also adds variable that is an unnecessary when running
  (only used when compiling).

  Instead use `have_pvplugin_support` function in paraviewFunctions
  wmake script to determine the maj.min from the PV_PLUGIN_PATH
  since we have already defined the output path there with paraview
  maj.min numbering.

  Can now build with paraview from the operating system,
  provided that it has develop headers available.

      ParaView_VERSION=system

  In the etc/config.sh/paraview setup, the maj.min is taken from
  the corresponding `paraview --version` output and used when
  defining the PV_PLUGIN_PATH.

  During the build, the include path taken from `paraview-config`
  for a system installation, from the guess installation root
  of the paraview binary, or ParaView_DIR otherwise.

NB: using a system ParaView for building runTimePostProcessing is unsupported.

- these types of builds appear to have various library resolution issues
  (eg, libexpat not being loaded). Additionally, the build logic does
  not yet cover this type of use case.

CONFIG: add so version to libcatalystFoam

STYLE: add OpenFOAM/include directory in CMakeLists

- eg for foamVersion.H

STYLE: improve consistency in Allwclean scripts

- as originally intended years ago, but never actually done.

- use 'foamPvCore' instead of 'vtkPVReaders' to avoid potential name
  collisions with any 'vtk*' files and since we may reuse these
  functions in other foam-paraview modules (not just readers).

STYLE: use same font size/colour for patch-names as for point-numbers

BUG: repair issue with single time-step

- paraview time-selector returns '0' as the requested time if there is
  only one time step. However, if we have skipped the 0/ directory,
  this single time step is likely a non-zero value.

'set -x' should be used for debugging.

Added command printing into wmake and Allwmake as a replacement for
'set -x' to log current target.

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

- more consistent with the rest of the OpenFOAM source tree

- improve wmake / wclean behaviour

- remove patch/point text labels upon deletion

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

- directory reorganization