This is basically a cleanup release for 6.4. We have fixed a variety of problems reported by 6.4 users.
A dump/restore is not required for those running 6.4.
Add pg_dump -N flag to force double quotes around identifiers. This is the default(Thomas)Fix for NOT in where clause causing crash(Bruce)EXPLAIN VERBOSE coredump fix(Vadim)Fix shared-library problems on LinuxFix test for table existence to allow mixed-case and whitespace in the table name(Thomas)Fix a couple of pg_dump bugsConfigure matches template/.similar entries better(Tom)Change builtin function names from SPI_* to spi_*OR WHERE clause fix(Vadim)Fixes for mixed-case table names(Billy)contrib/linux/postgres.init.csh/sh fix(Thomas)libpq memory overrun fixSunOS fixes(Tom)Change exp() behavior to generate error on underflow(Thomas)pg_dump fixes for memory leak, inheritance constraints, layout changeupdate pgaccess to 0.93Fix prototype for 64-bit platformsMultibyte fixes(Tatsuo)New ecpg man pageFix memory overruns(Tatsuo)Fix for lo_import() crash(Bruce)Better search for install program(Tom)Timezone fixes(Tom)HP-UX fixes(Tom)Use implicit type coercion for matching DEFAULT values(Thomas)Add routines to help with single-byte (internal) character type(Thomas)Compilation of libpq for Windows fixes(Magnus)Upgrade to PyGreSQL 2.2(D'Arcy) 
