(void) change for aix and hp compilers.

protocol cleanup.

From: Stan Brown <stanb@awod.com>

Cleanup patches for previous protocol changes patch

I've completed the patch to fix the protocol and authentication issues I
was discussing a couple of weeks ago.  The particular changes are:

- the protocol has a version number
- network byte order is used throughout
- the pg_hba.conf file is used to specify what method is used to
  authenticate a frontend (either password, ident, trust, reject, krb4
  or krb5)
- support for multiplexed backends is removed
- appropriate changes to man pages
- the -a switch to many programs to specify an authentication service
  no longer has any effect
- the libpq.so version number has changed to 1.1

The new backend still supports the old protocol so old interfaces won't
break.

I have always been under the impression that NULL is not equal to
NULL and that NULL is not equal to anything else either.  If this
is the case, then this patch is correct.

If NULL _is_ equal to NULL, then I think there are other problems
in the Group By logic.

  o  The manual (really text) pages for create/alter/drop user.

PostgreSQL type extensions for IP and MAC addresses.

I needed to record IP and MAC level ethernet addresses in a data
base, and I really didn't want to store them as plain strings, with
no enforced error checking, so I put together the accompanying code
as my first experiment with adding a data type to PostgreSQL.  I
then thought that this might be useful to others, both directly and
as a very simple example of how to do this sort of thing, so here
it is, in the hope that it will be useful.

From: <Dr. Andrew C.R. Martin> martin@biochem.ucl.ac.uk

Small patch for sparc solaris/tas()

This patch solves the problem with multiple order by columns, with the
first one having NULL values.

Hi -- a couple of small items concerning the January 23rd snapshot:
the inclusion of the Kerberos stuff in one Makefile, a "leading tab"
cleanup in another, and a fix for a typo in the configure script.

free()

From: James Hughes <jamesh@interpath.com>

revoke statements.

From: James Hughes <jamesh@interpath.com>

when creating unique indexes.

From: James Hughes <jamesh@interpath.com>

Linux platform.

From: James Hughes <jamesh@interpath.com>

lock before older waiters, and having readlock people not share
locks if a writer is waiting for a lock, and waiting writers not
getting priority over waiting readers.

to break.  renaming to PG_LOCK_LEVEL

This is a patch to fix crashes in psql when executing queries from
an external file. The code also adds error checking to verify that
memory for "query" was allocated. The conditional for the block of
code was changed from "query == NULL" to "query_alloced == false".

The conditional, "query == NULL", was never true. This prevented
the memory being allocated for "query". A few lines later, an attempt
to write to an un-allocated memory area generated a SIGSEGV causing
the frontend to crash.

psql .psqlrc file startup(Andrew)

Fixed pointed out by: jwieck@debis.com (Jan Wieck)