tree 8e121bb894269fcdbebe9030823b60173b6213ac
parent 95963e6294ce3e2e700dea4055fb62b73f23aa95
author Brad Fitzpatrick <bradfitz@golang.org> 1308239753 -0700
committer Brad Fitzpatrick <bradfitz@golang.org> 1308239753 -0700
golang-hg 76cd8f767f5e6f478a715719a5010d78ae225ce8

mime/multipart: convert Reader from interface to struct

It was always a weird interface but I didn't know what I
was doing at the time.  rsc questioned me about it then
but didn't press on it during review.  Then adg bugged me
about it too recently.

So clean it up. It parallels the Writer struct too.

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/4602063