* A vulnerability exists due to the insecure creation of temporary files,
which could possibly let a malicious user overwrite arbitrary files
* Repair possible failure to update hint bits on disk
Under rare circumstances this oversight could lead to "could not access
transaction status" failures, which qualifies it as a potential-data-loss bug.
changes:
* Fix temporary memory leak when using non-hashed aggregates (Tom)
* ECPG fixes, including some for Informix compatibility (Michael)
* Fixes for compiling with thread-safety, particularly Solaris (Bruce)
* Fix error in COPY IN termination when using the old network
protocol (ljb)
* Several important fixes in pg_autovacuum (Matthew T. O'Connor)
* Fix problem with reading tar-format dumps on NetBSD and BSD/OS (Bruce)
* Several JDBC fixes
* Fix ALTER SEQUENCE RESTART where last_value equals the restart
value (Tom)
* Repair failure to recalculate nested sub-selects (Tom)
* Fix problems with non-constant expressions in LIMIT/OFFSET
* Support FULL JOIN with no join clause, such as X FULL JOIN Y ON
TRUE (Tom)
* Fix another zero-column table bug (Tom)
* Improve handling of non-qualified identifiers in GROUP BY clauses
in sub-selects (Tom)
* Do not generate "NATURAL CROSS JOIN" when decompiling rules (Tom)
* Add checks for invalid field length in binary COPY (Tom)
* Avoid locking conflict between ANALYZE and LISTEN/NOTIFY
* Numerous translation updates (various contributors)
Has local patch to (incompletely) work around an issue with the jdbc driver
erroneously leaving ';' on the end of tablenames resulting in it generating
SQL statments of the form "SELECT * FROM tablename; WHERE ..."
