Improved fix to pg_user/passwd problem...using rewrite rules

Here's my next patch. this one should fix some more bugs. ecpg now fully
understands the whenever statement.

Free memory after comparison in nodeUnique.c

 them from scratch. gram.y has now grown so that some non-bison yaccs
 (including FreeBSDs) run out of room and quit.

 The parser recently grew too big for some yaccs, including FreeBSD.

Allow USER and VALID as column names and identifiers.

 minus. Example is SELECT f1-2 FROM INT4_TBL;

 used in regression tests. No longer core dumps.

 in the usual man page source directory anyway. Source tree now builds.

 for linux-alpha support.

any other, example program.

I have tracked this down to a call to PQfinish() in ECPGfinish()
that occurs before any connection is established.

From: Keith Parks <emkxp01@mtcc.demon.co.uk>

From: Michael Meskes <meskes@topsystem.de>

backend/port/isinf.c it tries to compile two versions of
isinf().


From: Andrew Martin <martin@biochemistry.ucl.ac.uk>

From: Michael Meskes <meskes@topsystem.de>

whatsoever. The patch is not a solution, because configure is generated
from configure.in, and I don't know how to patch it to get a working
'configure'.

From: "Pedro J. Lobo" <pjlobo@euitt.upm.es>

they don't exist anymore

dgux 5.4R4.11

Missing port-protos.h (not needed, I think).  Wants dld.h.  Should
really use the system dl stuff (like i386_solaris).  Needs to include
<netinet/in.h> before <arpa/inet.h>.  Here are some patches...

compiler define that should have been enabled, but was not due to
different naming conventions for Linux/Alpha. Attached is the patch he
sent me, that I have not had a chance to test yet.

From: Ryan Kirkpatrick <rkirkpat@nag.cs.colorado.edu>

Missing = in an update