Returns a logger object (based on log4perl). Category and interface hash parameter are optional. Normally, the category should follow the current package and the interface should be set correctly via C4::Context.
In order to prevent a crash when log4perl cannot write to Koha logfile, we check first before calling log4perl. If log4perl would add such a check, this would no longer be needed.
Dummy destroy to prevent call to AUTOLOAD
Kyle M Hall, <email@example.com> Marcel de Rooy, Rijksmuseum