Tom Lane 3438c988fd Use plain memset() in numeric.c, not MemSet and friends.
This essentially reverts a micro-optimization I made years ago,
as part of the much larger commit d72f6c750.  It's doubtful
that there was any hard evidence for it being helpful even then,
and the case is even more dubious now that modern compilers
are so much smarter about inlining memset().

The proximate reason for undoing it is to get rid of the type punning
inherent in MemSet, for fear that that may cause problems now that
we're applying additional optimization switches to numeric.c.
At the very least this'll silence some warnings from a few old
buildfarm animals.

(It's probably past time for another look at whether MemSet is still
worth anything at all, but I do not propose to tackle that question
right now.)

Discussion: https://postgr.es/m/CAJ3gD9evtA_vBo+WMYMyT-u=keHX7-r8p2w7OSRfXf42LTwCZQ@mail.gmail.com
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PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	https://www.postgresql.org/download/

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.
Description
he World's Most Advanced Open Source Relational Database.
Readme 740 MiB
Languages
C 85.3%
PLpgSQL 5.9%
Perl 4.4%
Yacc 1.2%
Meson 0.7%
Other 2.2%