This change requires that the de-reference operator '()' returns a
const-reference to the object stored irrespective of the const-ness of
object stored and the new member function 'ref()' is provided to return
an non-const reference to stored object which throws a fatal error if the
stored object is const.

In order to smooth the transition to this new safer 'tmp' the now
deprecated and unsafe non-const de-reference operator '()' is still
provided by default but may be switched-off with the compilation switch
'CONST_TMP'.

The main OpenFOAM library has already been upgraded and '-DCONST_TMP'
option specified in the 'options' file to switch to the new 'tmp'
behavior.  The rest of OpenFOAM-dev will be upgraded over the following
few weeks.

Henry G. Weller
CFD Direct

To be used instead of zeroGradientFvPatchField for temporary fields for
which zero-gradient extrapolation is use to evaluate the boundary field
but avoiding fields derived from temporary field using field algebra
inheriting the zeroGradient boundary condition by the reuse of the
temporary field storage.

zeroGradientFvPatchField should not be used as the default patch field
for any temporary fields and should be avoided for non-temporary fields
except where it is clearly appropriate;
extrapolatedCalculatedFvPatchField and calculatedFvPatchField are
generally more suitable defaults depending on the manner in which the
boundary values are specified or evaluated.

The entire OpenFOAM-dev code-base has been updated following the above
recommendations.

Henry G. Weller
CFD Direct

This change ensures that these patches are named consistently so that
they can be looked-up as required in e.g. patchMeanVelocityForce

Resolves bug-report http://openfoam.org/mantisbt/view.php?id=1969

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.

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

The new NotImplemented macro uses __PRETTY_FUNCTION__ for GNU compatible
compilers otherwise __func__ to provide the function name string.

by ensuring tetBasePtIs is called on all processors, even for those with
0 cells.  Also use unique communicator for globalMeshData to avoid data
transfer interference.

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1792

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1792

Avoids problems with overlapping communicationbetween these reductions
and the calculation of deltaCoeffs.  This is a temporary fix while code
reorganizations are undertaken to ensure the globalMeshData is updated
before deltaCoeffs are requested.

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1780

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1818

This simplifies the specification of patch faces in blockMeshDict which
now do need not have any particular ordering of the block vertices.

Also removed __GNUC__ conditional compilation statements which are no
longer needed.

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4340.html

Resolves additional bug-report http://www.openfoam.org/mantisbt/view.php?id=1544

Resolves issues with probes and findRefCell for meshes in which all cell face-pyramids are positive.

symmetryPlanePolyPatch: calculate the plane normal during construction to guarantee parallel consistency