Make version.sgml the central place for updating version numbers in the
documentation.  Document titles now contain the version number of the
release they belong to.

filelist.sgml is the central (and only) place to declare system entities
(i.e., sgml files).  No longer a need to declare them in each document
header.

There is no longer any need to maintain duplicate chapter lists in
postgres.sgml and user/admin/etc.sgml, everything is build from the same
sources.  Some parameter entities allow for different text to be included
when the integrated or a single doc set is generated, which eliminates the
problems that had caused this to fail in the past.

Thanks to Brian Hirt for pointing out the performance lossage.

if enable_mergejoin = OFF.  Must do this, because we have no other
implementation method for full joins.

assert_test() functions --- these weren't accomplishing much except to
render the whole module un-loadable ...

from Adriaan Joubert <a.joubert@albourne.com>

From Adriaan Joubert <a.joubert@albourne.com>

standalone, e.g., "./pg_regress int2".

compatibility library which contains a 'main' function, which is not good.
If someone really needed it, think of a different plan.

Improve documentation, too.

Remove timestamps from messages where this would be redundant with the
log_timestamp option.

documentation.

rather than just being aliases for int4in/int4out.  Give type Oid a
full set of comparison operators that do proper unsigned comparison,
instead of reusing the int4 comparators.  Since pg_dump is now doing
unsigned comparisons of OIDs, it is now *necessary* that we play by
the rules here.  In fact, given that btoidcmp() has been doing unsigned
comparison for quite some time, it seems likely that we have index-
corruption problems in 7.0 and before once the Oid counter goes past
2G.  Fixing these operators is a necessary step before we can think
about 8-byte Oid, too.

(should fix OID bootstraping).