| Subject: | drop database harmfully destructive for DBD::CSV |
if the DSN is like dbi:CSV:f_ext=.csv/r
DBD::CSV will consider in the (database)folder (default ".") *ONLY* the files with the extension ".csv". All other files are presumed not to be part of the "database".
Test::Database however calls rm_tree on that folder on drop_database ().
It should *only* do so if Test::Database created the folder itself