Fixes #2466.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5451094

R=golang-dev, gri, adg, r
CC=golang-dev
https://golang.org/cl/5434098

All but 3 cases (in gcimporter.go and hixie.go)
are automatic conversions using gofix.

No attempt is made to use the new Append functions
even though there are definitely opportunities.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5447069

R=golang-dev, bradfitz, gri, r, agl
CC=golang-dev
https://golang.org/cl/5434095

Includes minimal change to gcimporter to keep it working,

R=rsc, gri
CC=golang-dev
https://golang.org/cl/5431046

R=ken2
CC=golang-dev
https://golang.org/cl/5437136

R=gri, r, gustavo, r
CC=golang-dev
https://golang.org/cl/5451099

Also change "Special conditions" to "Special cases" as in other functions.

R=rsc, golang-dev
CC=golang-dev
https://golang.org/cl/5440078

By converting array indices to uint8, they are automatically
constrained in the array range, and the binary AND with 0xff
is no longer needed anymore.

Before:  aes.BenchmarkEncrypt    363 ns/op
After:   aes.BenchmarkEncrypt    273 ns/op

R=golang-dev, gri, agl
CC=golang-dev, remy
https://golang.org/cl/5450084

Equality on structs will require arbitrary code for type equality,
so change algorithm in type data from uint8 to table pointer.
In the process, trim top-level map structure from
104/80 bytes (64-bit/32-bit) to 24/12.

Equality on structs will require being able to call code generated
by the Go compiler, and C code has no way to access Go return
values, so change the hash and equal algorithm functions to take
a pointer to a result instead of returning the result.

R=ken
CC=golang-dev
https://golang.org/cl/5453043

gobuilder: -commit mode for packages
gobuilder: cripple -package mode temporarily

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5450092

misc/dashboard: support unauthenticated GETs
misc/dashboard: add ?nukeonly=1 option to /buildtest

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5450091

R=dsymonds
CC=golang-dev
https://golang.org/cl/5451092

Fixes #2522.

R=golang-dev, bradfitz, alex.brainman
CC=golang-dev
https://golang.org/cl/5449084

R=ken2, ken
CC=golang-dev
https://golang.org/cl/5449072

R=ken2
CC=golang-dev
https://golang.org/cl/5434111

R=ken2
CC=golang-dev
https://golang.org/cl/5450071

R=golang-dev, bradfitz, gri
CC=golang-dev
https://golang.org/cl/5451079

R=gri
CC=golang-dev
https://golang.org/cl/5448086

R=ken2
CC=golang-dev
https://golang.org/cl/5450067

R=golang-dev, gri, r, r
CC=golang-dev
https://golang.org/cl/5449067

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5449068

This has always been true, but we lost it from the spec
somewhere along the way, probably when we disallowed
the general 'pointer to anything sliceable' slice case.

R=gri
CC=golang-dev
https://golang.org/cl/5437121

R=ken2
CC=golang-dev
https://golang.org/cl/5440083

The special case in the spec is that you can take the
address of a composite literal using the & operator.

A composite literal is not, however, generally addressable,
and the slice operator requires an addressable argument,
so [3]int{1,2,3}[:] is invalid.  This tutorial code and one bug
report are the only places in the tree where it appears.

R=r, gri
CC=golang-dev
https://golang.org/cl/5437120

R=gri
CC=golang-dev
https://golang.org/cl/5451078

The SSH spec allows for the server to send a banner message to the client at any point during the authentication process. Currently the ssh client auth types all assume that the first response from the server after issuing a userAuthRequestMsg will be one of a couple of possible authentication success/failure messages. This means that client authentication breaks if the ssh server being connected to has a banner message configured.

This changeset refactors the noneAuth, passwordAuth and publickeyAuth types' auth() function and allows for msgUserAuthBanner during authentication.

R=golang-dev, rsc, dave, agl
CC=golang-dev
https://golang.org/cl/5432065

R=golang-dev
CC=golang-dev
https://golang.org/cl/5449063

For now a pair of socket options SOL_SOCKET and SO_BINDTODEVICE
is supported on Linux only. I'd like to demote BindToDevice API
to syscall level because it's Linux dependent one.

In the near future, probably we may have a bit more portable
API that using IPROTO_IP/IPV6 level socket options to specify,
identify an inbound, outbound IP interface on incoming, outgoing
UDP and raw IP packets.

R=cw, golang-dev
CC=golang-dev
https://golang.org/cl/5447071

Fixes #2517.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5440079

R=golang-dev, dsymonds, r
CC=golang-dev
https://golang.org/cl/5451073

R=golang-dev, dsymonds, rsc
CC=golang-dev
https://golang.org/cl/5437113

cmd.exe implicitly looks in "." before consulting PATH.
LookPath should match this behavior.

R=alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/5434093

I had the wrong idea when I wrote this.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5437111

tree sets.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5449062

Also ignore <head> tag after </head>.

Pass tests6.dat, test 0:
<!doctype html></head> <head>

| <!DOCTYPE html>
| <html>
|   <head>
|   " "
|   <body>

Also pass tests through test 6:
<body>
<div>

R=nigeltao
CC=golang-dev
https://golang.org/cl/5447064

This is a more conservative approach to heading detection and
removes 11 headings from the current repository (several in
fmt). The current headscan output is:

/home/gri/go3/src/cmd/goinstall (package documentation)
        Remote Repositories
        The GOPATH Environment Variable
/home/gri/go3/src/pkg/exp/gotype (package documentation)
        Examples
/home/gri/go3/src/pkg/html/template (package template)
        Introduction
        Contexts
        Errors
        A fuller picture
        Contexts
        Typed Strings
        Security Model
/home/gri/go3/src/pkg/text/template (package template)
        Actions
        Arguments
        Pipelines
        Variables
        Examples
        Functions
        Associated templates
        Nested template definitions
18 headings found

R=golang-dev, adg, rsc
CC=golang-dev
https://golang.org/cl/5437105

Fixes #2467.
Fixes #2464.

R=golang-dev, rsc, adg
CC=golang-dev
https://golang.org/cl/5447051

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5451070

- this removes extra conversions from strings to bytes and vice versa
  for each comment
- minor cleanups

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5434096