MySQL fix smf_db_list_columns
MySQL fix smf_db_list_columns

use the sql standard way to retrieve the information,
changed the format of the select to the show fields

same like pg and works even when the table didn't exists (so the pg and mysql api work in the same way)

Signed-off-by: 15e7bfe1e49d3f16d61b0796b9dded800c78babd@hotmail.de

StealthWombat/SMF2.1-more-forkery,StealthWombat/SMF2.1-more-forkery