* New upstream bug fix release: - Make pg_options_to_table return NULL for an option with no value. Previously such cases would result in a server crash. - Fix memory leak at end of a GiST index scan. Commands that perform many separate GiST index scans, such as verification of a new GiST-based exclusion constraint on a table already containing many rows, could transiently require large amounts of memory due to this leak. - Fix explicit reference to pg_temp schema in "CREATE TEMPORARY TABLE". This used to be allowed, but failed in 9.1.0.