const time.lowerhex

3 uses

	time (current package)
		format.go#L784: 	lowerhex  = "0123456789abcdef"
		format.go#L811: 				buf = append(buf, lowerhex[s[i+j]>>4])
		format.go#L812: 				buf = append(buf, lowerhex[s[i+j]&0xF])