To install, 

  ./configure --prefix=<wherever>
  make install

Then to use these, set SGML_CATALOG_FILES to <wherever>/catalog.

If you want to overwrite the existing catalog file, use the --enable-add
flag for the configuration script.

  ./configure --prefix=<wherever>

If you do not want to create the modified catalog, you can use the
--enable-no-catalog. This allows you to use the XSL files directly
from the Omegahat site.

