VoF Solvers: Relocate the correction, sub-cycling and compressions controls from PIMPLE to the alpha1 sub-dict
MULES: Add support for explicit correction
interPhaseChangeFoam: Add option for explicit MULES or as correction to an upwind solution
Deprecate implicit form of MULES

IMULES: MULES for implicit solution

phaseModelTable superseded by PtrDictionary

Also improved the efficiency of the handling of the models by evaluating only those specified.

multiphaseEulerFoam: Change the specification of the residual drag and smooth the drag phase-fraction pre-factor

* The residual drag is now specified in terms of a residual phase-fraction and slip-velocity.
* The drag phase-fraction pre-factor is smoothed so that the computational molecule matches that
  of the transport terms.

- Re-located mapped point patches
- Updated mapped patch write
- deprecated directMapped in favour of mapped
- updated resulting dependancies - apps/libs/tuts

Corrected tutorials

including two simple tutorial cases

multiphaseInterFoam: Upgraded to use the new MMULES algorithm

This reverts commit c5bea524.

This reverts commit b18f6cc1.

CHT solvers still to do

Exception: applyWallFunctionBoundaryConditions.C cannot split #include
directives.

multiphaseInterFoam: changed alphaContactAngleFvPatchScalarField to multiphaseAlphaContactAngleFvPatchScalarField

to avoid name clashed with the version of alphaContactAngleFvPatchScalarField in the interfaceProperties library.

- space between keyword and bracket in 'for(..)', 'if(..)', 'while(..)'

the include file back to mathematicalConstants.H to make upgrading code slightly easier.