- improve documentation, use GPL version 3

- used in expandDictionary

- use it to report the correct solverName for vector/tensor fields

- now passes through LaTeX with fewer complaints.

- added note about braces for 'case' statements.

- could not formulate a sensible rule about when return statements
  need parentheses and when not.

- did not update codingStyleGuide.pdf ... I don't even know if it
  should be part of the git repo at all

wmakeFindEmptyMake:
- Find 'Make/' directories without 'files' or 'options'.
  These typically correspond to (partially) removed applications.

Conflicts:
	src/finiteVolume/fields/fvPatchFields/derived/timeVaryingMappedFixedValue/timeVaryingMappedFixedValueFvPatchField.C

- constrain multiple normals per point
- introduce special cyclic type nonuniformTransformCyclic inbetween zones

Relaxation and solution parameters for the final iteration in PIMPLE loops are
now selected according to the value of the "finalIteration" entry in the
mesh::data dictionary.

rhoPimpleFoam significantly updates and now replaces rhoPisoFoam.

overlap.

Matching wall collision records by storing and comparing location of
wall impact relative to paticle centre.

Both sides need to use the same tag so it is now calculated as
    nProcs*(max(myProcNo,neighProcNo) + min(myProcNo,neighProcNo)
which is
- commutative
- does not interfere with normal message tag 1

collision step to be skipped for the NoBinaryCollision model.

Updated dsmc and md tuts, including new cyclic handling.

- both versions handle the same input words.
  Only need the <Switch> version when the destination variable is
  also a Switch and we need to output the word later.

Removed Mattijs specific unitTestCases directory and moved CHANGES-splitCyclic into the doc/changes directory.

- add const-ness for control variables

- drop unused fluxGradp variable

- use lookupOrDefault instead of found/lookup combination