- can inadvertently arise from TAB-completion, but an option without a
  name doesn't make sense, we trap this and emit a warning.

- use complete -o filenames, dropped -o nospace to make it more responsive.

- restructure completion code to use a unified backend, which makes it easier
  understand, maintain and re-use.

- foamCreateBashCompletions now simply outputs to a stdout, and allows
  quick generation of completion of single applications.

- add -fileHandler completion in anticipation of future changes there.

- relocated as etc/config.s/bash_completion to prevent inadvertently
  having two versions (.com, .org) installed at the same time.

- error::throwExceptions(bool) returning the previous state makes it
  easier to set and restore states.

- throwing() method to query the current handling (if required).

- the normal error::throwExceptions() and error::dontThrowExceptions()
  also return the previous state, to make it easier to restore later.

BUG: Correct viscosity in simpleFoam motorBike tutorial (fixes #550)

See merge request !132

Consistent use of string methods

See merge request !128

Regression icc

See merge request !129

- this represents a partial revert for commit 6a0a8b99

- installed under /usr/include/scotch/scotch.h

ENH: obtain fallback value for SCOTCH_VERSION from the header

COMP: add support for metis, scotch static libraries (eg, EasyBuild)

- the 'protect' inputMode is used to supply defaults.
  If an entry already exists, it should act as a no-op without any
  side-effects whatsoever.

- Resolve ambiguity by using the following rules:

  1) starts with '/'  =>  absolute file-system path
  2) starts with './' or '../'  =>  file-system path relative to CWD
  3) otherwise treat as relative to the case

STYLE: allow write access to headerClassName

- mostly associated with forgotten quotes around "(abd|def)" ...

- Address different potential problems:

      (key) { key1   entry1; }
      (key) { key1   entry1; };    // <- Note trailing ';'
      (key) entry2;

Feature streams cleanup

See merge request !127

STYLE: checkMesh: remove duplicate writeSets entry from header (resolves #293)

See merge request !125

Feature external file coupler

See merge request !126

- clear error flags. Special handling for igzstream.

- resets the output buffer completely - implementing what rewind was
  likely meant to have accomplished for many use cases.

STYLE: OSHA1stream reset() for symmetry. Deprecate rewind().

- use allocator class to wrap the stream pointers instead of passing
  them into ISstream, OSstream and using a dynamic cast to delete
  then. This is especially important if we will have a bidirectional
  stream (can't delete twice!).

STYLE:

- file stream constructors with std::string (C++11)

- for rewind, explicit about in|out direction. This is not currently
  important, but avoids surprises with any future bidirectional access.

- combined string streams in StringStream.H header.
  Similar to <sstream> include that has both input and output string
  streams.

- do not recheck the abort after it has been triggered once.
  This reduces the output clutter and file checks.

- since the cpu/sys information is invariant, it doesn't make much
  sense to emit by default at every time-step.

- With many processors, the number of entries becomes quite large.

  New controlDict InfoSwitches: "writeSlaves", "writeRoots".