- note left utilities/mesh/advanced/collapseEdges/collapseEdges.C as-is.
  It looks suspicious, but the change was recent, so maybe it means something

- removed/renamed one level of directories, not all constants are dimensioned
    global/dimensionedConstants -> global/constants/
    global/dimensionedConstants/constants/* -> global/constants/

- formatting and doxygen cleanup

- added degToRad() and radToDeg() inline functions (in mathematicalConstants)
  removed equivalent degToRad() from engineTime

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

Conflicts:
	src/autoMesh/autoHexMesh/trackedParticle/trackedParticle.H
	src/mesh/autoMesh/autoHexMesh/trackedParticle/trackedParticle.H
	src/mesh/blockMesh/blockMesh/blockMeshMerge.C
	src/postProcessing/functionObjects/field/streamLine/streamLineParticle.H

- added subsetStrings and inplaceSubsetString

- added class wordReListMatcher to wrap a match() for a UList<wordRe>

- also sifted through code to find out why polySplineEdge is going wrong

  It doesn't seem to be a virtual/non-virtual issue, but appears to
  be an issue with how BSpline is solving for the new points.

- first version. Only uses simple hex shapes for the blocks.

- expose point field throughout

- make output less verbose, but can switch on/off with verbose() static method

- can be used to query available time directories

- useful, for example, with a shell script