- adjust Make/{files,options} to install into 'module' locations

     FOAM_MODULE_APPBIN, FOAM_MODULE_LIBBBIN

  If unset, these will default to FOAM_USER_APPBIN, FOAM_USER_LIBBBIN,
  respectively. This recovers the normal, expected behaviour while still
  supporting direct compilation into the main OpenFOAM directories
  if so desired.

  For OpenFOAM-v2006 and later, these can be controlled with the
  FOAM_MODULE_PREFIX (set with -prefix or -module-prefix) to specify
  different locations.

  For earlier and other OpenFOAM versions, the new configuration files
  will still work, but need to define manually instead. For example,

      FOAM_MODULE_APPBIN=/some/install-path/bin \
      FOAM_MODULE_LIBBIN=/some/install-path/lib \
              ./Allwmake