ENH: Changing boundaryRadiationProperties to read an scalar when a lookup mode is used for boudanry radiation properties.
Tutorials updated accordingly

BUG: boundaryRadiationProperties - updated to use caseConstant() for parallel usage and updated style

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=2062

Resolves bug-report http://openfoam.org/mantisbt/view.php?id=2061

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=2060

Now the calculation of the 2nd-invariant is more efficient and
accumulates less round-off error.

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=2059

ENH: cyclicAMI: added 'method' specification



See merge request !31

Old:
- Previous versions created k and epsilon fields by default, and
  then processed omega and nuTilda fields if present.
- Depending on the choice of turbulence model, not all of these fields
  would be used, and could lead to errors when running some utilities
  due to erroneous values.
- If the omega field did not exist, it would be derived from the epsilon
  field, and also inherit the epsilon boundary conditions (wall
  functions)

New:
- This version will only update fields that already exist on file, i.e.
  will not generate any new fields, and will preserve the boundary
  conditions

ENH: Changing header information in turbulentTemperatureCoupledBaffleMixedFvPatchScalarField & turbulentTemperatureRadCoupledMixedFvPatchScalarField

Fixes #103

Now internal forces and restraints may be applied between bodies within
the articulated structure.

The joint-space dynamics is solved on the master processor only and the
resulting joint-state distributed to the slave processors on which the
body-state is then updated.  This guarantees consistency of the body
position and orientation on all processors.

rigidBodyDynamics/bodies/sphere: Added support for the centre of mass being offset from the centre of rotation

Calculate the inertia from the lengths of the sides