pgsql: pg_resetwal: Use frontend logging API

pg_resetwal: Use frontend logging API

This now causes error messages related to the lack of the -f option to
appear on standard error rather than standard output.

Reviewed-by: Aleksander Alekseev 
Discussion: https://www.postgresql.org/message-id/flat/0f3ab4a1-ae80-56e8-3426-6b4a02507687@eisentraut.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/a11d8e10f226c5a2072c1640bd1d70403ae4c4fa

Modified Files
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src/bin/pg_resetwal/pg_resetwal.c | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)