MemoryContextAllocZero back to MemoryContextAlloc, same as it was in 7.4.
The zeroing is unnecessary since all the meaningful fields are filled in
just below.  I had made it do that out of neatnik-ism, but some testing
with an example provided by Pavel Stehule showed that the zeroing was
accounting for about 5% of the runtime in a compute-intensive plpgsql
function.  That seems a bit high of a price for neatnik-ism...

tutorial to be used without necessarily having a configured source tree.

got it wrong when the JOIN was in an outer query level.  Per example from
Laurie Burrow.  Also fix same issue in markTargetListOrigin.  I think the
latter is only a latent bug since we currently don't apply markTargetListOrigin
except at the outer level ... but should do it right anyway.

Jun Kuwamura

of an sprintf() as a source string.  Demonstrably does not work with
recent gcc and/or glibc on some platforms.

version of Kerberos.  Per report from Reinhard Max.

CASE 'a' WHEN 'a' THEN 1 ELSE 2 END.  This worked in 7.4 and before
but had been broken due to premature freezing of the type of the test
expression.  Per gripe from GÄbor SzÃcs.

telling when it has been exceeded.  Per trouble report from
Jean-GÅrard Pailloncy.

few 'listen_addresses' as possible --- on most systems, none at all,
just the Unix socket.  This avoids spurious check failures due to bogus
DNS setups, and is probably a good idea from a security standpoint anyway.
Per trouble report from Jean-GÅrard Pailloncy.

GERMAN datestyles.  Ancient bug reported by Terry Lee Tucker.

Per report from Robert Koepferl.

1 Report error message instead of do nothing in case of error in regex
2 Malloced storage for mask, find and repl part of Affix. This parts may be
  large enough in real life (for example in czech, thanks to moje <moje@kalhotky.net>)

returned by Perl.  Per report from Nicolas Addington.

up release to rc5

pkey/unique constraint indexes) and schemas.  Per report from
Michael Fuhr.

so that we can get the size of a shared inval message back down to what it
was in 7.4 (and simplify the logic too).  Phase 2 of fixing the
'SMgrRelation hashtable corrupted' problem.

is the minimum required fix.  I want to look next at taking advantage of
it by simplifying the message semantics in the shared inval message queue,
but that part can be held over for 8.1 if it turns out too ugly.

since st_ino can't be trusted on that platform.  Per report from T.J.

the old 'page' chapter and the recently added 'filelayout' chapter to
make a coherent chapter about PostgreSQL's physical storage layout.

releases, a nonzero 'c' argument meant that the input string could be
terminated by either that character or \0.  Recent refactoring broke
that, causing the thing to scan for 'c' only.  This went undetected
because no part of the main code actually passes nonzero 'c'.  However
it broke tsearch2 and possibly other user-written code that assumed
the old definition.  Per report from Tom Hebbron.

per discussion in Nov 2004 with Ken Tanzer.

John Gray