- 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

- allows us to follow the changes

- improves code re-usage for pre-receive hook

- NB: A csh version is not needed, since the values here are only
      sourced during the wmake process

- for future updates of scotch, need to edit these two files:

    OpenFOAM-<VERSION>/src/parallel/decompose/Allwmake
    ThirdParty-<VERSION>/Allwmake