Update #2573.

R=r
CC=golang-dev
https://golang.org/cl/5656071

R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/5677060

It depended on old behavior of functions in structs.
Solved by adding a boolean method to check .Run != nil.

R=golang-dev, adg, r, rsc
CC=golang-dev
https://golang.org/cl/5674062

R=bradfitz
CC=golang-dev
https://golang.org/cl/5673061

R=gri
CC=golang-dev
https://golang.org/cl/5677061

go/doc: move Examples to go/ast
cmd/go: use go/doc to read examples
src/pkg: update examples to use new convention

This is to make whole file examples more readable. When presented as a
complete function, preceding an Example with its output is confusing.
The new convention is to put the expected output in the final comment
of the example, preceded by the string "output:" (case insensitive).

An idiomatic example looks like this:

// This example demonstrates Foo by doing bar and quux.
func ExampleFoo() {
        // example body that does bar and quux

        // Output:
        // example output
}

R=rsc, gri
CC=golang-dev
https://golang.org/cl/5673053

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5656070

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5672061

R=bradfitz, rsc
CC=golang-dev
https://golang.org/cl/5673048

Fixes #3019.

R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/5674044

Fixes #3022

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5674060

R=golang-dev, dsymonds, adg, rogpeppe, bradfitz
CC=golang-dev
https://golang.org/cl/5673052

Fixes #2896.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5677047

Whoops. Consume the body of the first request
before making the subsequent /quit request.

R=golang-dev, untheoretic
CC=golang-dev
https://golang.org/cl/5674054

Also: Simplified handling of selector expressions. As a result, complicated
multi-line expressions containing selectors and calls/indices with arguments
broken accross lines don't get indented the same way as before, but the change
is minimal (see tests) and there's no such code in the std library. It seems
a worthwhile compromise given the much simpler code.

Applied gofmt -w $GOROOT/src $GOROOT/misc .

Fixes #1847.

R=rsc
CC=golang-dev
https://golang.org/cl/5675062

R=rsc
CC=golang-dev
https://golang.org/cl/5677053

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5672055

        Fixes #3023.

R=rsc
CC=golang-dev
https://golang.org/cl/5674055

Previous CL (5674043) omit the case where runtime/cgo itself is out-of-date.
Fixes #2936 (again).

R=rsc
CC=golang-dev
https://golang.org/cl/5674048

Makes it possible to run

GOARCH=amd64 make.bash
GOARCH=386 make.bash --no-clean

to avoid deleting some of the work done by the first one.

R=golang-dev
CC=golang-dev
https://golang.org/cl/5673056

Similar to bug190, but without recursive reference.  Crashed
gccgo.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5672053

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5672052

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5672050

    CL 5666043 fixed the same checking for 5g.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5666045

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5671051

R=rsc, iant, iant
CC=golang-dev
https://golang.org/cl/5656058

return (*Template, error), not just *Template.

Fixes #2757.

R=r
CC=golang-dev
https://golang.org/cl/5665044

Just an oversight they didn't work and easy to address.

Fixes #3025.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5656059

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5671049

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5676046

Fixes #2979.

R=rsc, r
CC=golang-dev
https://golang.org/cl/5664046

R=golang-dev, mpimenov, alex.brainman
CC=golang-dev
https://golang.org/cl/5667045

R=golang-dev, adg, r, bradfitz
CC=golang-dev
https://golang.org/cl/5675054

R=bradfitz, dsymonds
CC=golang-dev
https://golang.org/cl/5675056

R=golang-dev, dsymonds, r, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/5675055

use ':' instead of ';' to keep consistency with the other panic strings

R=golang-dev, dsymonds, r
CC=golang-dev
https://golang.org/cl/5666048

R=r, bradfitz
CC=golang-dev, rogpeppe
https://golang.org/cl/5673049

When I build it, I got:
/home/njubee/work/golang/doc/codewalk/markov.go:124: undefined: time.Nanoseconds
time.Nanoseconds() does not exist now, use time.Now().UnixNano() instead

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5668044

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5677046

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5649087