pgsql: Fix inconsistencies in the code

Fix inconsistencies in the code

This addresses a couple of issues in the code:
- Typos and inconsistencies in comments and function declarations.
- Removal of unreferenced function declarations.
- Removal of unnecessary compile flags.
- A cleanup error in regressplans.sh.

Author: Alexander Lakhin
Discussion: https://postgr.es/m/0c991fdf-2670-1997-c027-772a420c4604@gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/6b8548964bccd0f2e65c687d591b7345d5146bfa

Modified Files
--------------
contrib/cube/cube.c | 2 +-
doc/src/sgml/catalogs.sgml | 2 +-
doc/src/sgml/gist.sgml | 2 +-
src/backend/access/transam/multixact.c | 8 +++++---
src/backend/catalog/aclchk.c | 2 +-
src/backend/catalog/namespace.c | 6 +++---
src/backend/executor/README | 4 ++--
src/backend/executor/execScan.c | 3 +--
src/backend/executor/execTuples.c | 2 +-
src/backend/executor/nodeProjectSet.c | 4 ++--
src/backend/executor/nodeRecursiveunion.c | 4 ++--
src/backend/lib/dshash.c | 2 +-
src/backend/postmaster/autovacuum.c | 2 +-
src/backend/replication/basebackup.c | 2 +-
src/backend/storage/buffer/localbuf.c | 2 +-
src/backend/storage/ipc/procarray.c | 9 +++++----
src/backend/storage/lmgr/predicate.c | 2 +-
src/backend/storage/smgr/md.c | 3 ---
src/backend/utils/adt/tsrank.c | 2 +-
src/backend/utils/misc/tzparser.c | 3 +--
src/bin/pg_dump/pg_backup_db.c | 2 +-
src/include/access/heapam.h | 2 +-
src/include/access/timeline.h | 2 +-
src/include/executor/executor.h | 2 +-
src/include/executor/tablefunc.h | 6 +++---
src/include/nodes/execnodes.h | 2 +-
src/include/partitioning/partprune.h | 8 ++++----
src/include/port/atomics/generic-acc.h | 2 +-
src/interfaces/ecpg/compatlib/exports.txt | 2 +-
src/interfaces/ecpg/ecpglib/ecpglib_extern.h | 3 ---
src/interfaces/ecpg/ecpglib/execute.c | 2 +-
src/interfaces/ecpg/include/ecpglib.h | 2 --
src/interfaces/ecpg/preproc/Makefile | 1 -
src/interfaces/ecpg/preproc/preproc_extern.h | 1 -
src/pl/plpgsql/src/pl_exec.c | 8 ++++----
src/test/regress/regressplans.sh | 2 +-
src/tools/msvc/Mkvcbuild.pm | 1 -
37 files changed, 52 insertions(+), 62 deletions(-)