The automatic sqlize logic has been changed so that the xfd and xdd options are no longer synonymous. If a <sqlize xdd="xxx"> attribute is specified, it looks for a file with .xdd file extension. If a <sqlize xfd="xxx"> attribute is specified, it looks for a file with .xfd file extension. If both attributes are specified, the logic first looks for an XDD file and if the file is not found, sqlize falls back to looking for an XFD file.
Note: This modification is a behavior change as <sqlize xdd> is no longer a synonym of <sqlize xfd>.