Some versions of lsof print the mount point (if remote) after the
script path:
    /hosts/mymachine/OpenFOAM/OpenFOAM-plus.develop/etc/cshrc (mymachine:/home)
This now gets filtered out.

- suppress error messages that appear with zsh.
  According to unset(1p), 'unset -f' unsets a function.
  If the function was not previously defined, this is a no-op.
  This is similar for zsh, but there it emits a warning if the
  function was not previously defined.

- avoid 'local' in functions sources from etc/bashrc.
  ksh does not support this.

- use 'command' shell builtin instead of 'type'.
  Seems to be more consistent between shell flavours.

- has different locations on different systems
  (eg, /usr/bin/lsof or /sbin/lsof)

- this implies that jobControl is a user-resource for OpenFOAM.
  It was previously located under $WM_PROJECT_INST_DIR/jobControl,
  but few users will have write access there.

- an unset FOAM_JOB_DIR variable is treated as "~/.OpenFOAM/jobControl",
  which can partially reduce environment clutter.

- provide argList::noJobInfo() to conveniently suppress job-info on an
  individual basis for short-running utilities (eg, foamListTimes) to
  avoid unneeded clutter.

- permit SYSTEMMPI user adjustments via
      etc/config.{csh,sh}/mpi-system
  This can be a convenient place for setting up SYSTEMMPI for OpenFOAM
  without adjusting bashrc, prefs.sh ...

- add a USERMPI type. This represents any generic mpi implementation.
  The user is responsible for supplying an appropriate
  wmake/rules/General/mplibUSERMPI file and managing all settings.

  This type of setup can be useful in combination with specific build
  systems (SPACK, EASYBUILD, etc) or module systems for which the MPI
  variant is part of the installed configuration.

- this allows the sys-admin to provide base values independent of any
  WM_PROJECT_SITE value.

- handle sourcing bashrc with a relative path (issue #383)
- handle sourcing from bash and zsh.
  Still need manual intervention when sourcing dash, sh, or ksh.
- replace grep in etc/cshrc with sed only
- logical instead of physical path for WM_PROJECT_DIR (issue #431).
  Doesn't seem to be possible for csh/tcsh.

  * Continue using physical locations when comparing directories,
    but not for the top-level FOAM_INST_DIR, WM_PROJECT_DIR.

- relocate WM_CC, WM_CXX overrides from etc/config.*/compiler
  to etc/config.*/settings to ensure that they are left untouched
  when etc/config.sh/compiler is sourced while making third-party
  packages (eg, gcc, llvm, CGAL).

- provide fallback FOAM_TUTORIALS setting in RunFunctions

STYLE: remove "~OpenFOAM" fallback as being too rare, non-obvious

- easier to test or use different versions

- change WM_CXXFLAGS to -std=c++11 instead of -std=c++0x

Can now use this:
    _foamSourceEtc config.sh/scotch
    _foamSourceEtc config.csh/scotch

instead of this:
    _foamSource $($WM_PROJECT_DIR/bin/foamEtcFile config.sh/scotch)
    _foamSource `$WM_PROJECT_DIR/bin/foamEtcFile config.csh/scotch`

In the bash/sh version, leave the _foamSource function for now, since
ThirdParty is still relying on it.

STYLE: elminate while-loop for _foamAddPath etc since this type of
construct isn't readily possible for csh and isn't being used anywhere.

- bump ADIOS version to 1.11.1

- makes it easier to switch between mpi implementations (eg, openmpi, intelmpi etc)

- add comment about compiler setting for KNL

- sometimes used for off-screen rendering.
  Only add to library-path when they are actually available

- the configuration settings can be used for the third-party build,
  but the configuration is not yet actively enabled in
  etc/bashrc, etc/cshrc

Resolves request http://bugs.openfoam.org/view.php?id=2367

Patch contributed by Bruno Santos
Resolves bug-report http://bugs.openfoam.org/view.php?id=2312

- instead we use the CGAL settings directly since they have the
  same option of (version | system | none)

- may wish to review this again in the future.

- export/setenv WM_COMPILER_TYPE as suggested by Mattijs.

- for overall consistency, don't carp about an unset WM_COMPILER_TYPE,
  since this would only be on the first instance (prior to the
  export/setenv) and would be confusing about why/when this message
  may occur.

- reduce clutter: only use (system|ThirdParty) for WM_COMPILER_TYPE.
  Drop the old 'OpenFOAM' setting for WM_COMPILER_TYPE, which was
  transitional in early 2011.

- make the error messages more meaningful

- also update settings to include newer compiler versions

Patch contributed by Bruno Santos
Resolves patch request http://bugs.openfoam.org/view.php?id=2112

FOAM_INST_DIR is the location of the OpenFOAM installation which defaults to
the directory containing the etc/bashrc,cshrc file.  If this default is
not appropriate FOAM_INST_DIR can be set explicitly.

Additionally filter $ParaView_DIR from paths in config.sh/paraview and config.csh/paraview

Resolves bug-report http://bugs.openfoam.org/view.php?id=2031

Set the environment variable "FOAMY_HEX_MESH" to build foamyHexMesh,
e.g. in ~/.OpenFOAM/dev/prefs.sh

FOAMY_HEX_MESH=yes

for consistency with etc/bashrc and etc/config.sh

See commit 4409a0ea

etc/config.sh and etc/config.csh

This structure is more convenient to add support for other shells, e.g. zsh, fish etc.

Resolves feature request to simplify support for other shells in
http://www.openfoam.org/mantisbt/view.php?id=1232