[PATCH] Sprintf() patch against current CVS tree.

Hi,

I checked all the previous string handling errors and most of them were
already fixed by You. However there were a few left and attached patch
should fix the rest of them.

I used StringInfo only in 2 places and both of them are inside debug
ifdefs. Only performance penalty will come from using strlen() like all
the other code does.

I also modified some of the already patched parts by changing
snprintf(buf, 2 * BUFSIZE, ... style lines to
snprintf(buf, sizeof(buf), ... where buf is an array.

This patch also passes all regression testing:
======================
All 89 tests passed.
======================

Patch is in -c format as requested and also available from
http://suihkari.baana.suomi.net/postgresql/patches/postgresql-CVS-2002-08-29-sprintf.patch

- Jukka