GitLab

- uses updated cmake/paraview scripts (1912, patch=200506)
  to support a user-specified installation prefix.

  Reworked the wmake Make/{files,options} files to respect the use
  of CMAKE_INSTALL_PREFIX, or default to FOAM_LIBBIN.

  Similarly the CMakeLists files have been updated to add install
  targets that respect the value of CMAKE_INSTALL_PREFIX.

  For building with paraview-5.7 and 5.8 a "staged" install is used
  to retain the expected output directory structure and to silently
  discard the unneeded static libraries.

- building paraview-5.7 and later requires cmake >= 3.10 itself
  but cmake-3.8 appears to work adequately for building dependent
  components

- use VERSION_GREATER_EQUAL instead of GREATER_EQUAL

Note
    For paraview-5.7 (and later?) plugins are built into their own subdirs.
    It also is not possible to suppress creation of static libraries in
    the process.

The current solution is still a bit ugly
  - install into a local "staged" location (within the build directory)
  - use rsync to relocate to the .so files to the plugin directory

- OpenFOAM reader:
     (vtkPVFoam, PVFoamReader_SM)
  => (vtkPVFoamReader, ParaFoamReader)

- blockMesh reader:
     (vtkPVblockMesh, PVblockMeshReader_SM)
  => (vtkPVblockReader, ParaFoamBlockReader)

* provides better correspondence between library and module names

- similar prefixing as the dependent readers, making it easier to
  identify

- add FOAM_API information as server module version

- building plugins with paraview-5.7 is quite different