The default ParaView is now 4.0.1 pending completion of testing of 4.1.0

- use standard *.sh, *.csh endings

This reverts commit c5bea524.

- this change was wished by Mattijs and/or Henry

- allow command-line settings to retain the flexibility of 'foamPV'
  alias mechanism.

This reverts commit 2e1e671d.

- drop FOAM_MPI_LIBBIN variable in favour of FOAM_MPI from which
  two different locations can be determined.

  Previously there was something like this:

      FOAM_MPI_LIBBIN = $FOAM_LIBBIN/openmpi-1.5.1

  We now instead determine the locations from the FOAM_MPI directly:

      FOAM_MPI=openmpi-1.5.1

          $FOAM_LIBBIN/$FOAM_MPI     -> OpenFOAM  mpi-related
          $FOAM_EXT_LIBBIN/$FOAM_MPI -> ThirdPary mpi-related

ENH: relocate ParaView libraries and plugins back under FOAM_LIBBIN

- as discussed with Mattijs

- remove settings for really old cmake versions

- avoid non-standard 'tempfile' in bin/tools/foamConfigurePaths

non-numeric (eg, a git or cvs version).

- place the onus on the user to provide the correct ParaView_MAJOR in
  these situations.

STYLE: Drop support for cmake older than 2.6.4 (installed in 3rdParty)

We should assume that they've been compiled with the current OpenFOAM
compiler settings and may have compiler-specific runtime requirements.

old: $WM_THIRD_PARTY_DIR/<packageName>/platforms/$WM_ARCH*
new: $WM_THIRD_PARTY_DIR/platforms/$WM_ARCH*/<packageName>

This streamlines the creation of binary packs, eases distribution and
helps when testing the robustness of relocatable installations.

- the 'make install' target from ParaView now installs all of the
  includes necessary for compiling plugins.