- for convenience and symmetry with OStringStream

STYLE: void return value for stream rewind() methods

- this makes it easier to design bidirectional streams

- low-level beginRaw(), writeRaw(), endRaw() methods.
  These can be used to directly add '()' decorators for serial output
  or prepare/cleanup parallel buffers.
  Used, for example, when outputting indirect lists in binary to avoid.

- now use public functions instead of direct access of private 'capacity_'
  information

- makes it easier to transmit or stream as a list of scalars

- the USE_OMP preprocessor symbol is also defined with the openmp
  compile flag to allow conditional compilation of openmp-specific
  code.

Mark Olesen authored Oct 19, 2017 and Mark OLESEN committed Oct 19, 2017

- better documentation of the file contents.
- quicker to obtain number of blocks without reading an entire file.

- used in various places to test if the input can be parsed as a
  label/scalar, so warnings tend to flood the output.

- be more explicit when encountering range errors

add support for KaHIP decomposition

See merge request OpenFOAM-plus!154

Feature list methods

See merge request OpenFOAM-plus!152

Bugfix multi level decomp

Closes #620 and #619

See merge request OpenFOAM-plus!153

- previously when more than two levels were used.
  Now calculate the required final target domain segment directly.

- refactor some common metis-like elements into the metisLikeDecomp
  abstract class.

- additional convenience constructors

- use FixedList first/last in Pair first/second

- consistent first/second access for line

- consistent versions in headers

- duplicate functionality to the substr() method and more difficult to
  notice when it is being used.

ENH: adjust infoSwitch to report host subscription (related to #531)

See merge request OpenFOAM-plus!150

- remove unused static variable, use updated hashtable methods