glg.go
func (g *Glg) Fatal(val ...interface{}) {
	err := g.out(FATAL, blankFormat(len(val)), val...)
	if err != nil {
		err = g.Error(err.Error())
		if err != nil {
			panic(err)
		}
	}
	exit(1)
}
func (g *Glg) Fatal(val ...interface{}) {
	err := g.out(FATAL, blankFormat(len(val)), val...)
	if err != nil {
		err = g.Error(err.Error())
		if err != nil {
			panic(err)
		}
	}
	exit(1)
}
// Fatal outputs Failed log and exit program