code review 163085: move ReadFile, WriteFile, and ReadDir into a separate i...

move ReadFile, WriteFile, and ReadDir into a separate io/ioutil package.
this breaks the dependency of package io on package bytes.

[r, 2009-12-02 22:23:10]

Hello rsc (cc: golang-dev@googlegroups.com),

I'd like you to review the following change.

[rsc, 2009-12-03 05:53:26]

LGTM

gri already has the json files in a separate CL

[r, 2009-12-03 06:02:16]

*** Submitted as http://code.google.com/p/go/source/detail?r=7620e54a1ccf ***

move ReadFile, WriteFile, and ReadDir into a separate io/ioutil package.
this breaks the dependency of package io on package bytes.

R=rsc
CC=golang-dev
http://codereview.appspot.com/163085