Index for manuals

Should have said in my previous message - if I understand the whole SGML thing (and I don't) if keywords are tagged
correctlywe can generate an automatic index for the docs. 

This is probably sorely needed - IMXHO v7.x is where Postgres is going to go ballistic, so a good index will probably
savea lot of traffic on the mailing lists. 

If you need a sucker^H^H^H^H^H^H volunteer to do this after 7.1 I'd be willing. Might take me a little while, but it's
thesort of thing I can get on with for an hour or so here and there. 

- Richard Huxton