wrmo: Add -a/-all/all option to remove .o files from all platforms rather than just the current platform.

Description
    Remove all .o files from the object directory tree corresponding to the
    current source derectory or remove only the .o file corresponding to the
    optionally specified [file].

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1485

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1484

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1483

Improves efficiency for moving-mesh cases

advectionDiffusionPatchDistMethod: Calculation of approximate distance to nearest patch for all cells
and boundary by solving the Eikonal equation in advection form with diffusion smoothing.

wallDist/patchDistMethods/Poisson: New method for fast calculation of an approximate wall-distance field
by solving Poisson's equation

Currently these vectors are generated at the same time as the wall-distance field
by the same run-time selected algorithm.  This will be changed so that the wall-reflection
vectors are only generated and stored if required.

When using models which require the wallDist e.g. kOmegaSST it will
request the method to be used from the wallDist sub-dictionary in
fvSchemes e.g.

wallDist
{
    method meshWave;
}

specifies the mesh-wave method as hard-coded in previous OpenFOAM versions.

Remove all .dep files from the object directory tree corresponding to the
current source derectory or remove only the .dep files referring to the
optionally specified [file].

In preparation for run-time selectable methods

Additional resolution of bug-report http://www.openfoam.org/mantisbt/view.php?id=1474

Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1474

Added InfoSwitches::writeOptionalEntries which enables the writing of optional keywords and values which are not present in the dictionary
Warning: generates a VERY large number of messages from OpenFOAM applications
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1473

Note: non-uniform scaling of a symmetric matrix generates an asymmetric matrix