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.

This reverts commit c600ce54.

- fix 'forAll (' -> 'forAll(' format (again)

- make table power-of-two, but since it seems to give 1-2% performance
  improvement, maybe forget it too.

- remove two-argument form of hashing classes and do the modulus direclty
  within HashTable instead. This simplifies things a fair bit.

- migrate Hash<void*> from db/dlLibrary to primitives/hashes/Hash