The logic introduced to avoid running cgo when
introducing _cgo_flags is faulty.  My goal was
to handle it with the following statement:

    -include _cgo_flags

The dash tells make to ignore errors if it can't
include the file.

What I missed, though, was the fact that it
*will* attempt to build the file if it knows
how.

This change will introduce the originally
intended semantics of not attempting to build
the file before necessary.

R=rsc
CC=golang-dev
https://golang.org/cl/4023069

This was split from CL 4124054

R=bradfitzgo
CC=golang-dev
https://golang.org/cl/4126057

R=r
CC=golang-dev
https://golang.org/cl/4105058

reg: enable peep optimizer.
cgen64: better int64 code.

R=r
CC=golang-dev
https://golang.org/cl/3989065

R=r
CC=golang-dev
https://golang.org/cl/4105057

R=rsc
CC=golang-dev
https://golang.org/cl/4023071

Fixes the build for 5l, and also removes an inconsequential bug in 8l.

R=rsc
CC=golang-dev
https://golang.org/cl/4127051

Missing closing bracket renders the next code snippet unreadable.

R=adg, gri
CC=golang-dev
https://golang.org/cl/4119060

A couple of post-closure function definitions were introduced too early, making the resulting
code fail compilation.

Also, the TitleValidator regexp was missing.

R=adg
CC=golang-dev
https://golang.org/cl/4105054

Previously, the outer loop would continue until we selected the
client's least preferable ciphersuite.

R=golang-dev, r2
CC=golang-dev
https://golang.org/cl/4029056

OS X, at least, appears to test |byte == 255|, not |byte != 0| to
establish if a bool is true or false.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/4128064

Many recently issued certificates are chained: there's one or more
intermediate certificates between the host certificate and the root CA
certificate. This change causes the code to load any number of
certificates from the certificate file. This matches the behaviour of
common webservers, and the output of OpenSSL's command line tools.

R=golang-dev, r2
CC=golang-dev
https://golang.org/cl/4119057

R=bradfitzgo, r
CC=golang-dev
https://golang.org/cl/4124054

If a multi-line raw string is the first token on a line, it
should not be indented because the following lines (belonging
to the raw string) are not indented either.

Adjusted src of ebnf/ebnf_test.go manually as it now is formatted
as expected.

gofmt -w src misc

Fixes #1072.

R=r
CC=golang-dev
https://golang.org/cl/4119056

Fixes #676.

R=r, rsc, r2
CC=golang-dev
https://golang.org/cl/4127043

R=r
CC=golang-dev
https://golang.org/cl/4130046

indirect through a pointer.

Fixes #1478.

R=rsc, r2
CC=golang-dev
https://golang.org/cl/4131045

signed or unsigned integers using %v or the formatless scanner.
That is, Sscan("0x11", &i) or Sscanf("0x11", "%v", &i) will now
set i to 17.   If a format other than %v is presented, the behavior
is as before.

Fixes #1469.

R=rsc
CC=golang-dev
https://golang.org/cl/4131042

Was crashing with GOOS=plan9 unless -s was passed.
Add symbols and line numbers to Plan 9 a.out.

R=rsc
CC=golang-dev
https://golang.org/cl/4080050

Must be invoked as ./clean.bash --gomake make
(or --gomake gmake, depending on the name of
GNU make).

R=niemeyer
CC=golang-dev
https://golang.org/cl/4023065

Thanks to mhantsch@gmail.com.

R=adg, brainman
CC=golang-dev
https://golang.org/cl/4092048

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/4121058

Removed most of the detailed examples about handing panics
from the go spec since it's now covered by Effective Go.

R=r, rsc, iant, ken2
CC=golang-dev
https://golang.org/cl/4128058

Note that DSA public key support is nascent and the verification
functions clearly don't support it yet. I'm intending to get RSA keys
working first.

R=bradfitzgo
CC=golang-dev
https://golang.org/cl/3973054

R=rsc
CC=golang-dev
https://golang.org/cl/4079063

Fixes #1004.
Fixes #1460.

R=mattn, r, niemeyer, rog, rsc
CC=golang-dev
https://golang.org/cl/4029053

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/4121057

The value of the internal flag includeNonGoFile
really is the value of the fulltextIndex flag.

R=rsc
CC=golang-dev
https://golang.org/cl/4044052

ReadRune.  (If you have a Reader but not a RuneReader, use bufio.)

The matching code is a few percent slower but significantly cleaner.

R=rsc
CC=golang-dev
https://golang.org/cl/4125046

As discussed in the mailing list, this adds a simple barrier
implementation to the sync package which enables one or more
goroutines to wait for a counter to go down to zero.

R=rsc, rog, r
CC=golang-dev
https://golang.org/cl/3770045

R=r, r2
CC=golang-dev
https://golang.org/cl/4128055

R=rsc, gri
CC=golang-dev
https://golang.org/cl/4130044

R=r
CC=golang-dev
https://golang.org/cl/4001056

R=ken2
CC=golang-dev
https://golang.org/cl/4128054

notes:
* due to Issue 1466 the Msghdr struct for
 src/pkg/syscall/ztypes_darwin_386.go
 src/pkg/syscall/ztypes_darwin_amd64.go
had to be edited after the godefs generation.
* ztypes_*.go files for linux, freebsd and darwin
have been prepared on the correct host OS and ARCH.
While the total increase is a dozen lines per file
the diff is larger due to a change to godefs,
 http://code.google.com/p/go/source/detail?r=c79e30afe9c8
while has altered the names of Pad members which
causes gofmt to realign the affected structs

R=rsc, mikioh
CC=golang-dev
https://golang.org/cl/4119053

R=adg, gri
CC=golang-dev
https://golang.org/cl/4126055

This change makes it legal to pass a struct value as receiver
outside the package declaring the struct even if the respective
struct type has non-exported fields.

This is a backwards-compatible language change motivated by the
fact that it is already possible to circumvent the assignment
restriction when calling methods through interfaces (see issue
1402).

R=r, rsc, iant, ken2
CC=golang-dev
https://golang.org/cl/3926044

This enables #cgo directives to contain a os/arch
specification which restricts the definition of
the given option to matching systems.

For example:

#cgo amd64 CFLAGS: -DAMD64=1
#cgo linux CFLAGS: -DLINUX=1
#cgo linux/amd64 CFLAGS: -DLINUX_ON_AMD64=1

R=rsc
CC=golang-dev
https://golang.org/cl/4121048

The object files begin with a header that is

        $GOARCH

on a line by itself.  This CL changes that header to

        go object $GOOS $GOARCH release.2011-01-01 4567+

where the final two fields are the most recent release
tag and the current hg version number.

All objects imported into a Go compilation or linked into an
executable must have the same header line, and that header
line must match the compiler and linker versions.

The effect of this will be that if you update and run all.bash
and then try to link in objects compiled with an earlier version
of the compiler (or invoke the wrong version of the compiler),
you will get an error showing the different headers instead
of perhaps silent incompatibility.

Normal usage with all.bash should be unaffected, because
all.bash deletes all the object files in $GOROOT/pkg/$GOOS_$GOARCH
and cleans all intermediate object files before starting.

This change is intended to diagnose stale objects arising when
users maintaining alternate installation directories forget to
rebuild some of their files after updating.

It should help make the adoption of $GOPATH (CL 3780043)
less error-prone.

R=ken2, r
CC=golang-dev
https://golang.org/cl/4023063

Prior to this CL, there were two requirements about the
package name main.

1. The package that sits at the root of the import graph
   (the one where program execution begins)
   must be named main.

2. No other package in the program can be named main.

This CL only removes requirement #2, which can be done
without changing any other Go documentation.

The new wording and formatting is such that removing
requirement #1 can be done by deleting a single line,
but making that change is explicitly outside the scope
of this CL, because it would require changes to other
documentation at the same time.

R=gri, r, gri1
CC=golang-dev
https://golang.org/cl/4126053