2.20.1 bugfix release * Drop duplicate declaration of message function "error_variable_not_set". * Update documentation with the "--config-file" option. * application_icons_list - Fix support for archive context. * applications_list - When parsing the game script, avoid printing duplicates. * debian_dependencies_full_list - Fix listing when both PKG_xxx_DEPS_DEB and PKG_xxx_DEPENDENCIES_LIBRARIES are set. * Add support for MIME type "application/vnd.microsoft.portable-executable".