Log message:
Changes 8.2.2:
* Remove security vulnerabilities that allowed connected users to
  read backend memory
* Fix not-so-rare-anymore bug wherein btree index page splits could
  fail due to choosing an infeasible split point
* Fix Borland C compile scripts
* Properly handle to_char('CC') for years ending in 00
  Year 2000 is in the twentieth century, not the twenty-first.
* "/contrib/tsearch2" localization improvements
* Fix incorrect permission check in information_schema.key_column_usage view
* Improve "VACUUM" performance for databases with many tables
* Fix for rare Assert() crash triggered by UNION
* Fix potentially incorrect results from index searches using ROW
  inequality conditions
* Tighten security of multi-byte character processing for UTF8
  sequences over three bytes long
* Fix bogus "permission denied" failures occurring on Windows due to
  attempts to fsync already-deleted files
* Fix bug that could cause the statistics collector to hang on
  Windows
* Fix possible crashes when an already-in-use PL/pgSQL function is
  updated
* Improve PL/pgSQL handling of domain types
* Fix possible errors in processing PL/pgSQL exception blocks

Log message:
Changes 8.2.0:
* Query language enhancements including "INSERT/UPDATE/DELETE
  RETURNING", multirow VALUES lists, and optional target-table alias
  in "UPDATE"/"DELETE"
* Index creation without blocking concurrent
  "INSERT"/"UPDATE"/"DELETE" operations
* Many query optimization improvements, including support for
  reordering outer joins
* Improved sorting performance with lower memory usage
* More efficient locking with better concurrency
* More efficient vacuuming
* Easier administration of warm standby servers
* New FILLFACTOR support for tables and indexes
* Monitoring, logging, and performance tuning additions
* More control over creating and dropping objects
* Table inheritance relationships can be defined for and removed from
  pre-existing tables
* "COPY TO" can copy the output of an arbitrary "SELECT" \ 
statement
* Array improvements, including nulls in arrays
* Aggregate-function improvements, including multiple-input
  aggregates and SQL:2003 statistical functions
* Many "contrib/" improvements