- When building OpenFOAM for different platform combinations
  (single/double, int32/int64) the build information that is compiled
  into the OpenFOAM lib can become out of sync.

  This is because the update trigger (wmakeBuildInfo -check) is
  independent of the targetted platform. The added file
  'src/OpenFOAM/Alltouch' provides a direct means of forcing a rebuild
  of the version information. Eg,

      src/OpenFOAM/Alltouch
      wmake src/OpenFOAM

  Also provide an additional 'wmakeBuildInfo -remove' to forcibly
  remove META-INFO/build-info, if that is desired.