I had the wrong idea when I wrote this.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/
5437111
This weekly snapshot includes changes to the hash package and a gofix for the
time and os.FileInfo changes in the last snapshot.
-The hash.Hasher's Sum method has been given a []byte argument, permitting
-the user to hash an arbitrary byte slice without Writing to the Hasher.
+The hash.Hash's Sum method has been given a []byte argument,
+permitting the user to append the hash to an existing byte slice.
Existing code that uses Sum can pass nil as the argument.
Gofix will make this change automatically.