a child table already has a matching column.  Acquire appropriate
lock on child table; do the right thing with any CHECK constraints
attached to the new parent column.

the relfilenode and toast fields.  This ensures that the newly-computed
statistics will be available on completion of CLUSTER.

where it's safe to do database access.  Along the way, fix core dump
for 'DEFAULT' parameters to CREATE DATABASE.  initdb forced due to
change in pg_proc entry.

> * Acquire lock on a relation before building a relcache entry for it

> 	o MOVE 0 should not move to end of cursor (Bruce)

> * Support statement-level triggers and triggers on columns (Neil)

CONVERSION code.  Still need to figure out what to do about inappropriate
coding in parsing.

outside the source tree.

> * Allow psql to do table completion for SELECT * FROM schema_part and
>   table completion for SELECT * FROM schema_name.

(Not that it will actually work with 7.3, I fear.)

> * Have standalone backend read postgresql.conf

(usually bison output files), not as standalone files.  This hack
works around flex's insistence on including <stdio.h> before we are
able to include postgres.h; postgres.h will already be read before
the compiler starts to read the flex output file.  Needed for largefile
support on some platforms.

from WARNING to NOTICE, since they are expected messages in common cases.

core file to be produced for debugging, and avoids trying to run the
normal proc-exit cleanup hooks, which are likely to cause additional
problems if the system is hosed.

this returns NULL, which confuses the code.

between signal handler and enable/disable code, avoid accumulation of
timing error due to trying to maintain remaining-time instead of
absolute-end-time, disable timeout before commit not after.

Only affects machines where MAXALIGN > 4, and is a boundary-condition
case even there, but still surprising that it's not been identified
before.  Also reduce tuple chain move give-up messages from WARNING
to DEBUG1, since they are not unexpected conditions.

conform to C99's brain-dead notion of how inline functions should work.