docbook style sheets, as discussed with Peter.

$Header: -> $PostgreSQL Changes ...

UNIQUE and DISTINCT predicates are both listed as implemented -- AFAIK,
neither is.

I also included another trivial patch which adds the default location
of the DSSSL stylesheets on my system (Debian unstable, docbook-dsssl
1.76) to the list of paths that configure looks for.

Neil Conway

which covers some recent installation schemes.

Add Mandrake installation layout to directories to check for stylesheets.

Allow documentation build to proceed if stylesheets were not found, in case
the stylesheets might be found through the SGML catalog mechanism.

calls with new or now-built-in versions.  Make sure that all
calls to AC_DEFINE have a third argument, for possible use of
autoheader in the future.

standard installation layout it should be possible to build the HTML
and print documentation without additional manual setup.