- ensures that things stay synchronized when the processor domains
  have unequal looping.

- can be used in predicate matching

- getNameOp, getTypeOp for accessing the name() and type() of objects

- do not remove if the dictionary failed to load.
- do not remove if -blockTopology was used.

- centralizes IOobject handling and treatment of alternative locations.
  If an alternative file location is specified, it will be used instead.

- provide decompositionMethod::canonicalName instead of using
  "decomposeParDict" in various places.

- a second template parameter for the comparison value type instead of
  ListType::const_reference allows more generic comparison predicates.

- create a subset copy for sending on the processor patches instead of
  a List of unsigned ints. Reduces memory overhead and data transfer
  amount.

- treat as a List constant without requiring inclusion of ListOps.H

- replace use of emptyList<label>() with emptyLabelList directly.
  The emptyList<T>() casting is disallowed with many modern compilers
  and now marked as deprecated (expect early removal).

- relocate labelList typedef to List.H for more general access.
  Similar reasoning to having labelUList defined in UList.H

- makes for easier extraction of boundary values since it encapsulates
  start/size directly.

Eg,
    SubList<T>(allValues, patches.range());
or
    bitSet(blocked, patches.range(patchi));

Eg,
    processorPolyPatch pp = ...;

    UOPstream toNbr(pp.neighbProcNo(), pBufs);
    toNbr << PackedList<Width>(faceValues, pp.range());

- concise and more efficient

- allows direct 'hashing' of fixed lists. Eg, triFace

- allows for simpler unpacking of a full list, or list range into any
  sufficiently large integral type.

  For example,
    processorPolyPatch pp = ...;

    UOPstream toNbr(pp.neighbProcNo(), pBufs);
    toNbr << faceValues.unpack<char>(pp.range());

- add range support in globalIndex and SubField, SubDimensionedField

General:
    * -roots, -hostRoots, -fileHandler

Specific:
    * -to <coordinateSystem> -from <coordinateSystem>

- Display -help-compat when compatibility or ignored options are available

STYLE: capitalization of options text

- avoids compiler ambiguity when virtual methods such as
  IOdictionary::read() exist.

- the method was introduced in 1806, and was thus not yet widely used

- behaves the same as the valid() method, but can be queried directly
  like a normal raw pointer and as per std::unique_ptr.
  Eg,

      autoPtr<T> ptr = ...

      if (ptr) ...

- test(), get(), set(), unset() with behaviour as per bitSet,
  to allow easier swapping out of boolList <-> bitSet.

- advanced options are not displayed with -help, but only with
  -help-full, which helps retain a better overview of the standard
  options.  Replaces previous ad hoc suppression of -listSwitches,
  -listRegisteredSwitches etc.

- supports copy append and move append

- already had remove() by iterator, but not by key.
  As per erase() which already worked by iterator or by key.

- as per 018124e3