pgsql: Message wording and pluralization improvements

Message wording and pluralization improvements

Branch
------
master

Details
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https://git.postgresql.org/pg/commitdiff/9effb63e0dd12b0704cd8e11106fe08ff5c9d685

Modified Files
--------------
src/backend/access/transam/xlog.c       |  6 ++++--
src/backend/bootstrap/bootstrap.c       |  2 +-
src/bin/pg_basebackup/pg_basebackup.c   |  4 ++--
src/bin/pg_basebackup/pg_receivewal.c   |  2 +-
src/bin/pg_basebackup/streamutil.c      |  4 +++-
src/bin/pg_controldata/pg_controldata.c | 20 +++++++++++++-------
src/bin/pg_resetwal/pg_resetwal.c       |  8 +++++---
src/bin/pg_rewind/pg_rewind.c           |  8 +++++---
src/bin/pg_upgrade/pg_upgrade.c         |  4 ++--
src/bin/pg_waldump/pg_waldump.c         |  4 +++-
10 files changed, 39 insertions(+), 23 deletions(-)