Implement extended comments ("/* ... */") using exclusive states.
Modify definitions of operators to remove some restrictions on characters
 and character order.

   Fix very old bug which made tuples changed/inserted by a commnd
visible to command itself (so we had multiple update of updated tuples,
etc).

visible to command itself (so we had multiple update of updated tuples,
etc).

pg_password utility.  Cleanup for psql passwords.  New datetime contrib stuff for new version.  Fix for strutils needing config.h.