updates the psql.1 manual page for \ options
        add row count and ties it to the header option
        updated manual pages and comment for above change
        got \? to display in one screen-full (almost, \? scrolls off top)
        moved \r to \E, and \z to \r (for historical reasons with monitor)
        small code alignment cleanup

Submitted by: Bruce Momjian <maillist@candle.pha.pa.us>