- maxStoredParcels was not being initialised

- Added call to Particle<Type>::readfields(CloudType) in derived types

- moved to $FOAM_LIBBIN/paraview so that built libraries sit in their
  own folder - avoids PV error msgs on start-up when it tries to load
  all libs under the $PV_PLUGIN_PATH

- using chemical enthalpy instead of total enthalpy

- Re-setting initial T fields to unitialised values prior to running
  setFields utility

- Retrieve h directly from thermo package instead of using look-up

- removed repeated declaration of pure abstract functions
- added function to return the turbulence effective thermal diffusivity
  for a patch

- Corrected calculation of temperature gradient
- Option to specify the heat source in terms of a power [W] or flux [W/m2]

- Updates to enable correct operation in parallel
- Added weighted average operation for cell sources

- Rewrote globalPoints to use globalIndex class so now only transfers
single label instead of labelPair
- Added addressing in globalMeshData
    - from coupled master points to slave points
    -         ,,          edges     ,,    edges
    - from coupled points (master or slave) to uncoupled boundary faces
    -               ,,                    ,,                      cells
- See test/globalMeshData for simple test

Scotch is now built using its own build system which builds
an additional metis.h which conflicts with the metis one so
to have separate include directory settings we also need separate
Make/ structures.