psql updates

I hope to have fixed all psql bugs that came up in the last month of my
absence. (The array syntax issue itself is not included.) I'd particularly
be interested whether the readline related compilation problem is gone,
since by readline's CHANGELOG I cannot decode when or where the problem
was introduced or removed. In addition, the frequent end user problem "I
did \dt and all my tables were gone" has been eliminated.

-- 
Peter Eisentraut                  Sernanders väg 10:115
peter_e@gmx.net                   75262 Uppsala
http://yi.org/peter-e/            Sweden