pgsql: Message style and spelling improvements

Message style and spelling improvements

Branch
------
REL9_1_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/a0b5146b25cd5924c5e5107c06b8777eec9f0a2f

Modified Files
--------------
src/backend/access/gist/gist.c             |    2 +-
src/backend/access/gist/gistvacuum.c       |    2 +-
src/backend/commands/extension.c           |    4 ++--
src/backend/commands/tablecmds.c           |   16 ++++++++--------
src/backend/parser/parse_utilcmd.c         |    8 ++++----
src/backend/replication/syncrep.c          |    6 +++---
src/backend/utils/misc/guc.c               |    4 ++--
src/test/regress/expected/alter_table.out  |    4 ++--
src/test/regress/expected/domain.out       |    4 ++--
src/test/regress/expected/foreign_data.out |    2 +-
src/test/regress/expected/rowtypes.out     |    2 +-
11 files changed, 27 insertions(+), 27 deletions(-)