- misc improvements in functionality.

- no reason to use post-increment in forAll() macro.

- use C++11 cbegin()/cend() method names for forAll*Iter() macros.
  These method names have been in OpenFOAM since 2009 and are also
  used by C++11 containers.

STYLE: nullptr instead of 0 in UList

adding viewFactorWall to inGroups fixes #384

@Sergio

See merge request !91

Examples,

    wmakePrintBuild -plus

Check if value is known
(ie, everything configured and also OpenFOAM+):

    if wmakePrintBuild -plus >/dev/null 2>&1
    then
        echo YES
    else
        echo NO
    fi

Check if version is new enough

    if ofver=$(wmakePrintBuild -plus 2>/dev/null) && [ "$ofver" -ge 1612 ]
    then
        echo YES
    else
        echo NO
    fi

Conditionals

    ofver=$(wmakePrintBuild -plus 2>/dev/null)
    case "${ofver:=0}" in
    1612)
        echo "something for 1612
        ;;
    1706)
        echo "something for 1706
        ;;
    esac

- makes it easier to use as a wordHashSet replacement for situations
  where we want to avoid duplicates but retain the input order.

- support construction from HashTable, which means it works like the
  HashTable::sortedToc but with its own hashing for these keys.

- expose rehash() method for the user. There is normally no need for
  using it directly, but also no reason to lock it away as private.

- LD_LIBRARY_PATH was not being cleaned at all when switching between
  paraview versions.

- PATH was cleaned against the third-party paraview-*, although 3rd
  party paraview is installed as ParaView-*.
  The additional cleanup for ParaView_DIR may not catch this (if it
  was unset elsewhere).

BUG: Removed call to topoChanging(false) in interDyMFoam and compressibleInterDyMFoam - see #363 and 03db8627

Example use

    foamGrepExeTargets           > targets-available
    foamGrepExeTargets -appbin   > targets-created

    diff -uw targets-available targets-created

- this is apparently not uniform across systems

STYLE: unify the date format in logfile

This reset the flag from any previous topo changes

- Could be related to interrupted builds.
  So if there are any parts of the build that rely on an explicit
  'wmakeLnInclude', make sure that the contents are properly updated.

--

ENH: improved feedback from top-level Allwmake

- Report which section (libraries, applications) is being built.

- Provide final summary of date, version, etc, which can be helpful
  for later diagnosis or record keeping.

- The -log=XXX option for Allwmake now accepts a directory name
  and automatically appends an appropriate log name.
  Eg,
      ./Allwmake -log=logs/  ->> logs/log.linux64GccDPInt32Opt

  The default name is built from the value of WM_OPTIONS.

--

BUG: shell not exiting properly in combination with -log option

- the use of 'tee' causes the shell to hang around.
  Added an explicit exit to catch this.

--

- Detecting the '-k' (-non-stop) option at the top-level Allwmake, which
  may improve robustness.

- Explicit continue-on-error for foamyMesh (as optional component)

- unify format of script messages for better readability

COMP: reduce warnings when building Pstream (old-style casts in openmpi)

- wm32/wm64 were for changing between -m32, -m64 builds on x86_64
  architectures. This is seldom enough not to warrant a special alias.
  Also ambiguous if these could refer to label sizes.

- Remove wm32,wm64 aliases.
- Add wmInt32, wmInt64 aliases for switching WM_LABEL_SIZE.

- can compile with icc 17.0.1
- note the min gcc versions needed to compile clang