pgsql: Fix various typos

Fix various typos

This fixes many spelling mistakes in comments, but a few references to
invalid parameter names, function names and option names too in comments
and also some in string constants

Also, fix an #undef that was undefining the incorrect definition

Author: Alexander Lakhin
Reviewed-by: Justin Pryzby
Discussion: https://postgr.es/m/d5f68d19-c0fc-91a9-118d-7c6a5a3f5fad@gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/b4dbf3e924b2556acbe103dc61ac71f9985ff24f

Modified Files
--------------
contrib/amcheck/verify_heapam.c                 | 2 +-
contrib/pg_walinspect/pg_walinspect.c           | 2 +-
contrib/postgres_fdw/connection.c               | 2 +-
contrib/postgres_fdw/postgres_fdw.c             | 2 +-
meson.build                                     | 2 +-
src/backend/backup/basebackup.c                 | 2 +-
src/backend/executor/execUtils.c                | 2 +-
src/backend/executor/nodeModifyTable.c          | 2 +-
src/backend/rewrite/rewriteManip.c              | 2 +-
src/backend/storage/buffer/bufmgr.c             | 2 +-
src/backend/storage/lmgr/predicate.c            | 2 +-
src/backend/storage/smgr/md.c                   | 2 +-
src/backend/utils/adt/acl.c                     | 4 ++--
src/backend/utils/adt/array_userfuncs.c         | 2 +-
src/backend/utils/misc/guc.c                    | 8 ++++----
src/backend/utils/misc/ps_status.c              | 2 +-
src/backend/utils/mmgr/mcxt.c                   | 2 +-
src/backend/utils/resowner/resowner.c           | 2 +-
src/bin/pg_dump/compress_lz4.c                  | 2 +-
src/bin/pg_dump/pg_dump_sort.c                  | 2 +-
src/bin/pg_dump/pg_dumpall.c                    | 2 +-
src/bin/scripts/t/100_vacuumdb.pl               | 2 +-
src/include/access/rmgrdesc_utils.h             | 2 +-
src/include/port/pg_iovec.h                     | 2 +-
src/include/regex/regcustom.h                   | 2 +-
src/include/utils/memutils_memorychunk.h        | 4 ++--
src/include/utils/tuplesort.h                   | 4 ++--
src/interfaces/libpq/fe-secure-gssapi.c         | 2 +-
src/interfaces/libpq/t/004_load_balance_dns.pl  | 8 ++++----
src/port/dirmod.c                               | 2 +-
src/test/kerberos/t/001_auth.pl                 | 2 +-
src/test/ldap/LdapServer.pm                     | 4 ++--
src/test/modules/ldap_password_func/meson.build | 2 +-
src/test/perl/PostgreSQL/Test/BackgroundPsql.pm | 4 ++--
src/test/regress/pg_regress.c                   | 2 +-
35 files changed, 46 insertions(+), 46 deletions(-)