Fix crash when referencing NEW row values in rule WHERE expressions (Tom)

Fix core dump when an untyped literal is taken as ANYARRAY

Fix mishandling of AFTER triggers when query contains a SQL function returning multiple rows (Tom)

Fix ALTER TABLE ... TYPE to recheck NOT NULL for USING clause (Tom)

Fix string_to_array() to handle overlapping matches for the separator string

For example, string_to_array('123xx456xxx789', 'xx').

Fix corner cases in pattern matching for psql's \d commands

Fix index-corrupting bugs in /contrib/ltree (Teodor)

Numerous robustness fixes in ecpg (Joachim Wieland)

Fix backslash escaping in /contrib/dbmirror

Fix instability of statistics collection on Win32 (Tom, Andrew)

Fixes for AIX and Intel compilers (Tom)