SQL cast constructs can be performed during expression transformation
instead of during parsing.  This allows constructs like x::numeric(9,2)
and x::int2::float8 to behave as one would expect.

read is reused for successive attributes, instead of being deleted and
recreated from scratch for each value read in.  This reduces palloc/pfree
overhead a lot.  COPY IN still seems to be noticeably slower than it was
in 6.5 --- we need to figure out why.  This change takes care of the only
major performance loss I can see in copy.c itself, so the performance
problem is at a lower level somewhere.

by creating a race condition.  It wasn't waiting for select() to say
write-ready immediately after connect, which meant that you might get
an unhelpful 'broken pipe' error message if connect failed, rather than
the intended error message.

overwrote.

CommandCounterIncrement to make new relation visible before trying to
parse/deparse the expressions.  Also, eliminate unnecessary
setheapoverride calls in AddNewAttributeTuples.

oidvector/int2vector.  pg_dump code was assuming that it would see
exactly FUNC_MAX_ARGS integers in the string returned by the backend.
That's no longer true.  (Perhaps that change wasn't such a good idea
after all --- will it break any other applications??)

problems are indeed fixed.

the case wherein zero was rejected for a field like NUMERIC(4,4).
Miscellaneous other code beautification efforts.

functions, which would lead to trouble with datatypes that paid attention
to the typelem or typmod parameters to these functions.  In particular,
incorrect code in pg_aggregate.c explains the platform-specific failures
that have been reported in NUMERIC avg().

regress test expected outputs were committed with NOTICEs appearing out
of order.  Update to correct results.

work now that did not work in 6.5.

- Prevent permissions on indexes
- Instituted --enable-multibyte option and tweaked the MB build process where necessary
- initdb prompts for superuser password

* Let unprivileged users change their own passwords.

* The password is now an Sconst in the parser, which better reflects its text datatype and also
forces users to quote them.

* If your password is NULL you won't be written to the password file, meaning you can't connect
until you have a password set up (if you use password authentication).

* When you drop a user that owns a database you get an error. The database is not gone.

in libpq --- mostly, poor response to error conditions.  You now actually
get to see the postmaster's 'The Data Base System is starting up' message,
which you didn't before.  I suspect the SSL code is still broken though.

report original error before attempting reset, not after.

80-column displays...

choke on relation or attribute names containing spaces, quotes, or other
special characters.  This fixes a TODO item.  It also forces initdb,
since stored rule strings change.

error-proof. Rearranged some old code and removed dead sections.