net/http: fix Response.Header documentation for multiple headers with same key
net/http: fix Response.Header documentation for multiple headers with same key

Whether the keys are concatenated or separate (or a mixture) depends on the server.

Fixes issue 5979.

R=golang-dev, bradfitz
CC=golang-dev
https://codereview.appspot.com/12433043

Committer: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang,h8liu/golang