pgsql: Make \? help message more clear when not connected.

Make \? help message more clear when not connected.

On second thought, "none" could mislead to think that you're connected a
database with that name. Duplicate the whole string, so that it can be
more easily translated. In back-branches, thought, just use an empty string
in place of the database name, to avoid adding a translatable string.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/8606dd81905a004eda74f0bfa0a9c9c18a488725

Modified Files
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src/bin/psql/help.c |   12 +++++++-----
1 files changed, 7 insertions(+), 5 deletions(-)