Some versions of the XSLT stylesheets don't handle the missing slash
correctly (they concatenate directory and file name without the slash).
This might never have worked correctly.
We had changed this from the default bold to monospace for all output
formats, but for man pages, this creates visual inconsistencies, so
revert to the default for man pages.
Documentation files in HTML and man formats are now prepared for
distribution using the distprep make target, like everything else. They
are placed in doc/src/sgml/html and manX and installed from there by
make install, if present. The business with the tarballs in the tarball
is gone.
