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- previously introduced `getOrDefault` as a dictionary _get_ method,
  now complete the transition and use it everywhere instead of
  `lookupOrDefault`. This avoids mixed usage of the two methods that
  are identical in behaviour, makes for shorter names, and promotes
  the distinction between "lookup" access (ie, return a token stream,
  locate and return an entry) and "get" access (ie, the above with
  conversion to concrete types such as scalar, label etc).

- reduced clutter when iterating over containers

- use the dictionary 'get' methods instead of readScalar for
  additional checking

     Unchecked:  readScalar(dict.lookup("key"));
     Checked:    dict.get<scalar>("key");

- In templated classes that also inherit from a dictionary, an additional
  'template' keyword will be required. Eg,

     this->coeffsDict().template get<scalar>("key");

  For this common use case, the predefined getXXX shortcuts may be
  useful. Eg,

     this->coeffsDict().getScalar("key");

- the wordHashSet typedef is always available when HashSet has been
  included.

- use default HashTable key (word) instead of explicitly mentioning it

- disable automatically upgrading copyrights in files since changes to
  not automatically imply a change in copyright. Eg, fixing a typo in
  comments, or changing a variable from 'loopI' to 'loopi' etc.

Requires gcc version 4.7 or higher

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1967

Avoids the clutter and maintenance effort associated with providing the
function signature string.

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1853

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1157

pairPatchAgglomeration: Do not use the result agglomeratePatch if the return indicates it is not valid
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1157

    Initialize faceAgglom list to identity when a patch is not agglomerated in faceAgglomerate.C
    Restrict agglomeration through edges with more than two faces attached in pairPatchAgglomeration.C

	1) fvDOM BC. greyDiffusiveRadiationMixedFvPatchScalarField.C
	2) radiationProperties and fvSolution for rays in fvDOM model
	3) radiativeIntensityRay.C using weighted residuals.

         Modification of shootRays algorithm. Rays that hit themselfs are continued
 	 until they hit(or not) the agglomeration target. If they do the surfaces can see
	 each other.
     faceAgglomerate:
	 The agglomeration now stops when the global nCoarse is reached (not per-processor)