TimeoutHandler was changed from "ns int64" to "dt time.Duration" on
Nov 30, 2011, but the godoc still refers to "ns".
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/
7031050
// TimeoutHandler returns a Handler that runs h with the given time limit.
//
// The new Handler calls h.ServeHTTP to handle each request, but if a
-// call runs for more than ns nanoseconds, the handler responds with
+// call runs for longer than its time limit, the handler responds with
// a 503 Service Unavailable error and the given message in its body.
// (If msg is empty, a suitable default message will be sent.)
// After such a timeout, writes by h to its ResponseWriter will return