- alternative to WM_PROJECT_INST_DIR/site for systems with locked down
  installation paths (eg, when packaged as RPM or deb)

  When "$WM_PROJECT_SITE" is defined, it is used in favour of
  "$WM_PROJECT_INST_DIR/site"

- also split on colons for consistency

- replaces previously used 'bin/'

STYLE: add -help to makeWmake

- may be useful in the future. For now it keeps consistency with
  foamPackMake, foamPackBins

- forgot in 10f5e808

- reduces typing

- restricts selection to Make/$WM_OPTIONS* subdirectories, which is
  useful when multiple compilers are in use

Also corrected many formatting errors in the comments in C and H files

- use function when sourcing the bashrc to avoid these problems

This reverts commit 2e1e671d.

- platforms/WM_OPTIONS/lib
      old: lib/WM_OPTIONS

- platforms/WM_OPTIONS/bin
      old: bin/WM_OPTIONS
      old: applications/bin/WM_OPTIONS

A runtime environment nows needs
    - bin/
    - etc/
    - platforms/

- update packing for FOAM_EXT_LIBBIN and newer FOAM_APPBIN
- pack OpenFOAM source via 'git archive' for consistency with
  the git repository (use -nogit option to revert to manual packing)
- combine foamPackBin + foamPackThirdPartyBin
- add foamPackThirdPartyBinAll (like foamPackBinAll)

- relocate service scripts into bin/tools
- use more standard 'tgz' instead of 'gtgz'

STYLE: minor rewording, drop grep/sed in favour of sed only

- avoid non-standard 'tempfile' in bin/tools/foamConfigurePaths

- filter out other subdirs, which could be architecture-specific

- more obvious in its meaning

- eg, "foamNewSource IO -", "foamNew -s IO -"  displays on stdout
  convenient for grabbing boilerplate directly