compressibleInterDyMFoam and interPhaseChangeDyMFoam: cache divU before time advancement to ensure the old-time meshPhi are used to make phi absolute
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1531

refineWallLayer: Rationalize and add support for operating on a list of patch name regular expressions
Resolves bug-report http://openfoam.org/mantisbt/view.php?id=1525

potentialFoam: Solve for velocity potential named Phi rather than using the pressure field for this purpose

The Phi field is read if available otherwise created automatically with
boundary conditions obtained automatically from the pressure field if
available (with optional name) otherwise inferred from the velocity
field.  Phi Laplacian scheme and solver specification are required.  See
tutorials for examples.

Use interFoam with fvOptions

Resolves bug-report http://openfoam.org/mantisbt/view.php?id=1382

Required change to IOobjectList to support the optional no-registration specification

Updated mesh-motion functionality

Explicitly name derived fields to improve readability of diagnostic messages and avoid duplicate registration

Avoids problem of duplicate registration

twoPhaseEulerFoam/twoPhaseSystem/diameterModels/constantDiameter: Do not register the temporary diameter field

threePhaseInterfaceProperties: Update constructor to be consistent with the two-phase interfaceProperties
Avoids problem of duplicate registration of K

Also moved global classes which should be in the Foam namespace into it.

This version is very inefficient in parallel and does not provide the
-parallelSource or -parallelTarget options which will need to be
reinstanted in the future or we could revert mapFields to the
OpenFOAM-2.2 version.

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=416

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1505