ENH: change some iterator -> const_iterator access

BUG: found some places with forAllIter and ::iterator !

- seems to work more reliably than the previous indented colons

STYLE: use 'forAll(' NOT 'forAll (', as per coding guide

- improves flexibility and allows more consistent long options

Conflicts:
	tutorials/incompressible/simpleFoam/pitzDaily/system/controlDict

This change allows functionObjects to cleanly terminate the code e.g. on convergence.

- lets the user specify controls like this:
      maxResiduals
      {
          p  5e-4;
          U  1e-3;
          "(k|epsilon|omega)"  1e-3;
      }

- simpler/clearer to use "on/off" instead of "compressed/uncompressed"

- Takes reactingParcelFoam solver and adds surface film capability

     surface film modelling

- provides mechanism whereby particles can be re-introduced to a cloud
- new injection models
- new particle properties determined by pulling data from the surface
  film model

- film approximated as single layer mesh, generated using
  extrudeToRegionMesh utility

- library implemented in a hierarchy similar to lagrangian/intermediate:
  - currently includes kinematic and thermodynamic variants

- sub-models include:
  - film detachment/dripping
  - phase change (place holder only)

- works in parallel

- currently in beta status

Improves the handling of residuals from the segregated solution of vectors and tensors.