constructor.

Added force to fixedPoint constraint.

Moved application of rotation matrices to function.

Implemented predictedPosition function.

Added maximum iteration check and under-relaxation variable.

Adding outline and placeholders for constraints and their solution.

Applying restraints, which return the force and moment to be applied
to the attachment point.

Adding linearSpring with along axis damping.

Making access functions for the sixDoFRigidBodyMotion data private
where possible to prevent erroneous external use of body local data.

Fixing bug in unused updateForce(pointField...) function, torques were
not being correctly applied.

Adding gravity lookup to uncoupledSixDoFRigidBodyDisplacement BC to
allow it to be used in, for example, moveDynamicMesh (which would need
read gravity into the database).

restraints and constraints.

Moving sixDoFRigidBodyMotion back one directory.

Adding uncoupledSixDoFRigidBodyDisplacement to execute motion
specified by the six DoF motion state, but not applying surface
forces.  Useful for pre-displacing a mesh.

Adding constrainedSixDoFRigidBodyDisplacement to temporarily perform
Vorticity's lander simulation.  Will be removed when generalised
constraints are added.

Added numbering on searhableSurfaceCollection.

- 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]