go/ast: implement Fprint and print functions to
print AST nodes

gofmt: print AST nodes by setting -ast flag

R=rsc, r
CC=golang-dev
https://golang.org/cl/1981044

R=rsc
CC=golang-dev
https://golang.org/cl/1933043

R=ec
CC=golang-dev
https://golang.org/cl/1982045

Function to create a GoString with a known length so it can contain NUL
bytes anywhere in the string. Some C libraries have strings like this.

R=rsc
CC=golang-dev
https://golang.org/cl/2007042

R=rsc, gri
CC=golang-dev
https://golang.org/cl/1952045

R=rsc, r
CC=golang-dev
https://golang.org/cl/1983045

Part 1, general scaffolding and pc/lc sections.

R=rsc, r, ken2
CC=golang-dev
https://golang.org/cl/1987042

R=adg
CC=golang-dev
https://golang.org/cl/2012041

R=adg, r, PeterGo
CC=golang-dev
https://golang.org/cl/1942044

I'm not sure there's a better way.
Cgo is juggling two different C compilers.

Fixes #1008.

R=iant
CC=golang-dev
https://golang.org/cl/1972044

Fixes #985.

R=dsymonds, dsymonds1
CC=golang-dev
https://golang.org/cl/1963044

handle missing id in server.

Fixes #1017.
Fixes #1018.

R=r
CC=golang-dev
https://golang.org/cl/1986044

Linenumbers start at 1.
Also call goc2c with an absolute pathi to preserve debug info.

R=rsc, r, ken2
CC=golang-dev
https://golang.org/cl/1954049

(Argument: For any *PtrValue p, it should
always be possible to do: p.PointTo(p.Elem()),
even if p.Elem() is nil.)

Fixes #1028.

R=rsc
CC=golang-dev, r
https://golang.org/cl/1938044

R=lvd
CC=golang-dev
https://golang.org/cl/1956046

to prevent files named 'clean', 'bench', etc... preventing proper build

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/1976044

preceded by white space parse correctly.

R=r
CC=golang-dev
https://golang.org/cl/2010041

R=rsc, r
CC=golang-dev
https://golang.org/cl/2005042

tabwriter: Introduce a new flag StripEscape to control
if tabwriter.Escape chars should be stripped or passed
through unchanged.

go/printer: Don't modify tabwriter.Escape'd text. This
involved a new implementation of the internal trimmer
object.

Does not affect formatting of any existing code under
$GOROOT/src and $GOROOT/misc.

Fixes #1030.

R=rsc
CC=golang-dev
https://golang.org/cl/1943045

R=rsc
CC=golang-dev
https://golang.org/cl/1995043

R=rsc
CC=golang-dev
https://golang.org/cl/1985042

the solution must work around a weakness in the reflection library:
there is no way to do type-safe conversions under reflection.

R=rsc
CC=golang-dev
https://golang.org/cl/2000041

R=rsc
CC=golang-dev
https://golang.org/cl/1953044

Fixes #1023.

R=gri
CC=golang-dev
https://golang.org/cl/1968043

This changeset implements client certificate support in crypto/tls
for both handshake_server.go and handshake_client.go

The updated server implementation sends an empty CertificateAuthorities
field in the CertificateRequest, thus allowing clients to send any
certificates they wish. Likewise, the client code will only respond
with its certificate when the server requests a certificate with this
field empty.

R=agl, rsc, agl1
CC=golang-dev
https://golang.org/cl/1975042

R=agl, agl1
CC=golang-dev
https://golang.org/cl/1959042

R=r, mpl
CC=golang-dev
https://golang.org/cl/1944043

R=gri
CC=golang-dev
https://golang.org/cl/1960044

R=rsc
CC=golang-dev
https://golang.org/cl/1942043

R=golang-dev
CC=golang-dev
https://golang.org/cl/1982042

Fixes #1024.

R=rsc
CC=golang-dev
https://golang.org/cl/1961042

(thanks to avp@mit.edu)

R=rsc
CC=golang-dev
https://golang.org/cl/1998041

- change ast.Ident back to contain the name and adjust all dependent code
- identifier object information will be added again through an optional
  typechecker phase (in the works).
- remove tracking of scopes in parser - it's easier to do this in a separate
  phase (in the works)
- in godoc, generate popup info table directly instead of through a formatter
  for simpler data flow (at the expense of a little bit more code)

Runs all tests.

As a result of this change, the currently shown popup information
(const, var, type, func, followed by identifier name) will not be
shown anymore temporarily.

R=rsc
CC=golang-dev
https://golang.org/cl/1994041

Rearrange code to clarify handling of %T, Formatter, GoStringer, and Stringer.

R=rsc
CC=golang-dev
https://golang.org/cl/1973043

Makes godoc --http=:1234 not crash on linux/amd64.

R=r
CC=golang-dev
https://golang.org/cl/1975044

Fixes #864.

R=rsc
CC=golang-dev
https://golang.org/cl/1975043

R=rsc
CC=golang-dev
https://golang.org/cl/1995041

not been mailed out for review.

R=r
CC=golang-dev
https://golang.org/cl/1962046

R=rsc
CC=golang-dev
https://golang.org/cl/1987041

R=golang-dev
CC=golang-dev
https://golang.org/cl/1956044