- use 1024 instead of 1000 since it will be changed internally to 1024 anyhow.

- use separate constructor for ignore-case option (cf. wordRe treatment)

- constructors/destructor now inline.

- make some IOobject writing routines non-templated.

- relocate more IOobject methods into the IOobjectI.H
  (generally cleanup the main header).

- avoid loading surface fields if there are no faceZones

- avoid pointMesh if there are no appropriate point fields

- erroneous double logic for subset meshes.

  The underlying vtk::vtuCells uses a cellMap to map into a global
  field, which also allows handling of decomposed polyhedral cells.

  If a mesh subset is involved (eg, cellSet, cellZone), then the
  set/zone cellMap can be used to ensure that the original number is
  properly adjusted. For foamToVTK, the meshSubsetHelper already
  does the subsetting and is used when loading fields.

  Does not affect ParaView reader module since there we work on the
  full field and do the subsetting manually (using the cellMap).

Merge develop into master for v1706 release

Closes #505, #509, #497, #502, #500, #498, #493, #492, #490, #485, #486, #484, #481, #480, #467, #473, #470, #466, #464, #463, #460, #462, #458, #418, #420, #391, #452, #454, #453, #439, #427, #415, #422, #414, #411, #400, #398, and #348

See merge request !121

STY: Fixing syntax in rhoPimpleDyMFoam/pEqn.H

by fvMesh.writeObject().

- end user can easily see which arch (endian, label/scalar size) was
  used from the log output, or via -help usage

- this is the same version as OpenFOAM-1612 shipped with and seems to
  have fewer issues than the newer openmpi-2.1.1

Feature rho pimple adiabatic

See merge request !118