- makes it easier to identify at a later stage

- 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

- ignore top-level /build and /platforms directories

- minor cleanup of wmake sources

ENH: Function objects - updated logic to determine whether or not to instantiate a time-based function object.  Fixes #439

ENH: Feature noise additions

See merge request !98

Both point- and surfaceNoise utilities can operate on multiple input
files.  However, if the files had the same name, the output would be
overwritten.  To avoid this, the output files are now written to a
sub-directory including the path '/input<input-file-index>/', e.g.

  postProcessing/noise/surfaceNoise/input0/nearWall/[fft|oneThirdOctave]

An optional 'outputPrefix' can be included (defaults to empty), e.g.
when set to 'test1':

  postProcessing/noise/test1/surfaceNoise/input0/nearWall/[fft|oneThirdOctave]

- easier to test or use different versions

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

- adjust so that the final -option is taken. This is consistent with
  other Unix tools.

ENH: short-circuit to avoid directory check on non-master node

Merge branch 'feature-noise-additions' of develop.openfoam.com:Development/OpenFOAM-plus into feature-noise-additions

- the regex was not being unset on assignment.
- drop unused recompile() method as being dubious

- tends to obscure what is going on and isn't needed either.

STYLE: adjust documentation. Accept std::string as parameter in more places.

- the purpose is more explicit, without needing to check documentation
  about what the bool parameter means.

STYLE: improve formatting of fileName documentation