functionObjects are now in the functionObjects namespace so "abort" no
longer causes a name-clash.

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=2080
Patch contributed by Mattijs Janssens

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=2073

tutorials/multiphase/reactingTwoPhaseEulerFoam/RAS/wallBoiling/system/fvSolution: Updated to improve stability

Set the environment variable "FOAMY_HEX_MESH" to build foamyHexMesh,
e.g. in ~/.OpenFOAM/dev/prefs.sh

FOAMY_HEX_MESH=yes

functionObjects: Moved into the functionObjects namespace and rationalized and simplified failable construction

Rather than requiring each functionObject to handle failed construction
internally (using the active_ flag) the static member function "viable"
is provided which returns true if construction of the functionObject is
likely to be successful.  Failed construction is then handled by the
wrapper-class which constructs the functionObject,
e.g. "OutputFilterFunctionObject".

EulerDdtScheme: evaluate dimensioned internal field expressions rather than primitive field expressions
Ensures dimension consistency and simplifies the expressions

Patch contributed by Bruno Santos
Resolved bug-report http://www.openfoam.org/mantisbt/view.php?id=2079

Patch contributed by Bruno Santos
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=2078

See http://www.openfoam.org/mantisbt/view.php?id=2076
  - .org is the file extension for emacs org-mode as well
  - .orig is more to the point (.org isn't always recognized as "original")
  - .original is too long, although more consistent with the convention
    of source code file naming

Update script contributed by Bruno Santos

GeometricField: Renamed internalField() -> primitiveField() and dimensionedInternalField() -> internalField()

These new names are more consistent and logical because:

primitiveField():
primitiveFieldRef():
    Provides low-level access to the Field<Type> (primitive field)
    without dimension or mesh-consistency checking.  This should only be
    used in the low-level functions where dimensional consistency is
    ensured by careful programming and computational efficiency is
    paramount.

internalField():
internalFieldRef():
    Provides access to the DimensionedField<Type, GeoMesh> of values on
    the internal mesh-type for which the GeometricField is defined and
    supports dimension and checking and mesh-consistency checking.

In order to simplify expressions involving dimensioned internal field it
is preferable to use a simpler access convention.  Given that
GeometricField is derived from DimensionedField it is simply a matter of
de-referencing this underlying type unlike the boundary field which is
peripheral information.  For consistency with the new convention in
"tmp"  "dimensionedInteralFieldRef()" has been renamed "ref()".

CrankNicolsonDdtScheme: Use the new GeometricField constructor from DimensionedField and boundary FieldField

Non-const access to the internal field now obtained from a specifically
named access function consistent with the new names for non-canst access
to the boundary field boundaryFieldRef() and dimensioned internal field
dimensionedInternalFieldRef().

See also commit 22f4ad32

functionObjectFile provides basic directory, file and formatting functions
functionObjectFiles provides multi-file cache

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=2075

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=2074

functionObjects/field/histogram: New functionObject to write the volume-weighted histogram of a volScalarField

e.g.
    pressureHistogram
    {
        type            histogram;

        functionObjectLibs ("libfieldFunctionObjects.so");

        field           p;
        nBins           100;
        min             -5;
        max             5;
        setFormat       gnuplot;
    }

provides optional control for solving the pyrolysis region.

Patch contributed by Karl Meredith, FMGlobal.

When the GeometricBoundaryField template class was originally written it
was a separate class in the Foam namespace rather than a sub-class of
GeometricField as it is now.  Without loss of clarity and simplifying
code which access the boundary field of GeometricFields it is better
that GeometricBoundaryField be renamed Boundary for consistency with the
new naming convention for the type of the dimensioned internal field:
Internal, see commit 4a57b9be

This is a very simple text substitution change which can be applied to
any code which compiles with the OpenFOAM-dev libraries.

Given that the type of the dimensioned internal field is encapsulated in
the GeometricField class the name need not include "Field"; the type
name is "Internal" so

volScalarField::DimensionedInternalField -> volScalarField::Internal

In addition to the ".dimensionedInternalField()" access function the
simpler "()" de-reference operator is also provided to greatly simplify
FV equation source term expressions which need not evaluate boundary
conditions.  To demonstrate this kEpsilon.C has been updated to use
dimensioned internal field expressions in the k and epsilon equation
source terms.

both of which return the dimensionedInternalField for volFields only.

These will be useful in FV equation source term expressions which need
not evaluate boundary conditions.

This reverts commit 3cfc54ba.