pgsql: Make psql's \sf and \ef honor ECHO_HIDDEN.

Make psql's \sf and \ef honor ECHO_HIDDEN.

These commands were calling the database direct rather than  calling
PSQLexec like other slash commands that needed database data.

The code is also changed not to pass the connection as a parameter to
the helper functions. It's available in a global variable, and that's
what PSQLexec uses.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/e4d28175a13d47a747b33e87c0f808b2ef57c0cd

Modified Files
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src/bin/psql/command.c |   22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)