Warn at unknown field, not abort

git-svn-id: http://svn.savannah.nongnu.org/svn/rdiff-backup@691 2b77aa54-bcbc-44c9-a7ec-4f6cf2b41109

trunk/rdiff-backup/TODO

-Only warn, not abort, when get undefined metadata field
-
 Fix restore with --force over existing regular file.
 
 For comparing, check source filesystem's abilities

trunk/rdiff-backup/rdiff_backup/metadata.py

@@ -199,8 +199,7 @@ def Record2RORP(record_string):
 		elif field == "Permissions": data_dict['perms'] = int(data)
 		elif field == "AlternateMirrorName": data_dict['mirrorname'] = data
 		elif field == "AlternateIncrementName": data_dict['incname'] = data
-		else: raise ParsingError("Unknown field in line '%s %s'" %
-								 (field, data))
+		else: log.Log("Unknown field in line '%s %s'" % (field, data), 2)
 	return rpath.RORPath(index, data_dict)
 
 chars_to_quote = re.compile("\\n|\\\\")