I've (re-)written  bnf for CQL based on recent

Not that the discussion has been all that useful
in trying to figure out what people really want
but it's time to focus on stabalizing this.  I've
put it up at

This is based on Alan's proposal as well as
Ralph's earlier work, and the recent discussion.

Officially, this is the current state of CQL, so
if there are specifics of this draft that you
don't like, I'll change it, if you send concrete
suggestions.  It's time to force the issue and
find out how close we are to some consensus.