const compress/flate.allocHistory

5 uses

	compress/flate (current package)
		deflatefast.go#L31: 	allocHistory = maxStoreBlockSize * 5
		deflatefast.go#L34: 	bufferReset = (1 << 31) - allocHistory - maxStoreBlockSize - 1
		deflatefast.go#L90: 			e.hist = make([]byte, 0, allocHistory)
		deflatefast.go#L124: 	if cap(e.hist) < allocHistory {
		deflatefast.go#L125: 		e.hist = make([]byte, 0, allocHistory)