func Debugf(format string, val ...interface{}) error {
	return glg.out(DEBG, format, val...)
}
func Debugf(format string, val ...interface{}) error {
	return glg.out(DEBG, format, val...)
}
func Debugf ( format string , val ... interface { } ) error { return glg . out ( DEBG , format , val ... ) }
// Debugf outputs formatted Debug level log
Debugf outputs formatted Debug level log