I believe this should fix the issue that Philip Warner
noticed about the check for unique constraints meeting the
referenced keys of a foreign key constraint allowing the
specification of a subset of a foreign key instead of
rejecting it.  I also added tests for a base case of
this to the foreign key and alter table tests and patches
for expected output.

report from Joel Burton.  Turns out that my simple idea of turning the
SELECT into a subquery does not interact well *at all* with the way the
rule rewriter works.  Really what we need to make INSERT ... SELECT work
cleanly is to decouple targetlists from rangetables: an INSERT ... SELECT
wants to have two levels of targetlist but only one rangetable.  No time
for that for 7.1, however, so I've inserted some ugly hacks to make the
rewriter know explicitly about the structure of INSERT ... SELECT queries.
Ugh :-(

about being given accurate references to referenced libraries ...

directories too, not only src and doc.

values, whether the local char type is signed or not.  This is necessary
for portability.  Per discussion on pghackers around 9/16/00.

correct on the relevant platforms.

very unhappy ...

Allow some operator-like tokens to be used as function names.
Flesh out support for time, timetz, and interval operators
 and interactions.
Regression tests pass, but non-reference-platform horology test results
 will need to be updated.

critical sections of code.

COPY BINARY is still broken for toasted data, however.

a toasted datum in VACUUM ANALYZE.

anymore.  That won't teach us anything new for the rest of this release
cycle, so it seems better to keep the --assert environment more like the
non-assert environment for beta.
I'm going to leave CLOBBER_FREED_MEMORY and MEMORY_CONTEXT_CHECKING
turned on by --enable-cassert for now, however.

leak memory when printing a toasted attribute, and printtup_internal
didn't work at all...

since those routines may do palloc's.  We want to be fairly sure we can
send the error message to the client even under low-memory conditions.
That's what we stashed away 8K in ErrorContext for, after all ...

not-very-good handling of mid-size allocation requests.  Do everything via
either the "small" case (chunk size rounded up to power of 2) or the "large"
case (pass it straight off to malloc()).  Increase the number of freelists
a little to set the breakpoint between these behaviors at 8K.

immediately uncovered three of Karel's own bugs, including a routine
that scribbled on its input (naughty naughty!)

apply Karel Zak's patch to recycle residual space in an exhausted allocation
block.  (Bet you thought I'd forgot about that, Karel?)

I hope all the dust has settled out now ...

If we're going to let it be run-time configurable, might as well allow
this too...

by without them.

Don't check for preprocessor symbols from system header files in port
include files, since those header files aren't included at this point.

$(CC) $(CFLAGS) $(LDFLAGS) <object files> <extra-libraries> $(LIBS) -o $@

This form seemed to be the most portable, readable, and logical, but in any
case it's better than having a dozen different ones in the tree.

both MULTIBYTE and TOAST prevent char(n) from being truly fixed-size.
Simplify and speed up fastgetattr() and index_getattr() macros by
eliminating special cases for attnum=1.  It's just as fast to handle
the first attribute by presetting its attcacheoff to zero; so do that
instead when loading the tupledesc in relcache.c.