pgsql: Message style improvements

Message style improvements

Message style, plurals, quoting, spelling, consistency with similar
messages

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/a8d585c0915939a42acdb529d8e0eb832935d45f

Modified Files
--------------
contrib/test_decoding/expected/binary.out          |    2 +-
src/backend/access/transam/multixact.c             |    4 +-
src/backend/catalog/dependency.c                   |    2 +-
src/backend/catalog/objectaddress.c                |    2 +-
src/backend/commands/copy.c                        |    2 +-
src/backend/commands/matview.c                     |    2 +-
src/backend/commands/tablecmds.c                   |    2 +-
src/backend/commands/tablespace.c                  |    2 +-
src/backend/commands/vacuumlazy.c                  |    8 +++-
src/backend/executor/execMain.c                    |   10 ++---
src/backend/parser/parse_clause.c                  |    4 +-
src/backend/replication/logical/logicalfuncs.c     |    2 +-
src/backend/replication/logical/origin.c           |   16 ++++----
src/backend/replication/logical/snapbuild.c        |    6 +--
src/backend/replication/slot.c                     |    6 +--
src/backend/tcop/postgres.c                        |    2 +-
src/backend/utils/adt/jsonb.c                      |    2 +-
src/backend/utils/adt/misc.c                       |    2 +-
src/bin/psql/command.c                             |    4 +-
.../test_rls_hooks/expected/test_rls_hooks.out     |   24 +++++------
src/test/regress/expected/jsonb.out                |    6 +--
src/test/regress/expected/matview.out              |    2 +-
src/test/regress/expected/rowsecurity.out          |   40 +++++++++----------
src/test/regress/expected/updatable_views.out      |   42 ++++++++++----------
24 files changed, 101 insertions(+), 93 deletions(-)