- Remove paraFoam/Allwmake leftover junk
  - Always attempt make of libccmio to ensure lnInclude/ exists

  * use $WM_THIRD_PARTY_DIR variable in top-level Allwmake
  * test new shell idiom for Allwmake files:
        # run from this directory only
        cd ${0%/*} || exit 1
    this might be especially useful when building optional components

specifically on the request of the user by running 'wmake all' or 'Allwmake'
in the directory as appropriate.

Changed WM_THIRD_PARTY to WM_THIRD_PARTY_DIR and added to all 'options' files that use third-party software.

Corrected the building of ccm26ToFoam.
Tested on dm from download to run -- all fine.
Needed to use --no-check-certificate option for wget.

application based on Mark's scripts.

Currently not working.