ENH: interFoam: Merged dynamic mesh functionality of interDyMFoam into interFoam

and replaced interDyMFoam with a script which reports this change.

The interDyMFoam tutorials have been moved into the interFoam directory.

This change is one of a set of developments to merge dynamic mesh functionality
into the standard solvers to improve consistency, usability, flexibility and
maintainability of these solvers.

Henry G. Weller
CFD Direct Ltd.

interMixingFoam, multiphaseInterFoam: Updated for changes to interFoam