Log Message:
Changes 8.2.7:
* Fix character string comparison for Windows locales that consider
  different character combinations as equal
* Repair potential deadlock between concurrent "VACUUM FULL"
  operations on different system catalogs
* Fix longstanding "LISTEN"/"NOTIFY" race condition
* Disallow "LISTEN" and "UNLISTEN" within a prepared transaction
* Disallow dropping a temporary table within a prepared transaction
* Fix rare crash when an error occurs during a query using a hash
  index
* Fix memory leaks in certain usages of set-returning functions
* Fix input of datetime values for February 29 in years BC
* Fix "unrecognized node type" error in some variants of "ALTER
  OWNER"
* Ensure pg_stat_activity.waiting flag is cleared when a lock wait is
  aborted
* Fix handling of process permissions on Windows Vista
* More...