pgsql: Message style improvements

Message style improvements

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/40fcfec82cf695d520f2dd91ee437fa75dea4ca7

Modified Files
--------------
contrib/earthdistance/expected/earthdistance.out              | 2 +-
src/backend/commands/extension.c                              | 2 +-
src/backend/executor/nodeAgg.c                                | 2 +-
src/backend/utils/adt/acl.c                                   | 4 ++--
src/test/modules/test_extensions/expected/test_extensions.out | 2 +-
5 files changed, 6 insertions(+), 6 deletions(-)