Fixes #3917.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6553061

After each line, ast.Print would do a zero-length write,
which would hit the boundary condition on Plan 9 when
reading over pipes (since message boundaries are
preserved). This change makes sure we only do positive-
length writes.

R=rsc, rminnich, dave, r
CC=golang-dev
https://golang.org/cl/6558046

This was misleading and often confusing for new users.

Leaving the actual weekly release history page for historical reference.

R=golang-dev, rsc, adg
CC=golang-dev
https://golang.org/cl/6555053

Today, if run.go doesn't understand a test header line it just ignores
the test, making it too easy to write or edit tests that are not actually
being run.

- expand errorcheck to accept flags, so that bounds.go and escape*.go can run.
- create a whitelist of skippable tests in run.go; skipping others is an error.
- mark all skipped tests at top of file.

Update #4139.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6549054

Revision 63f7abcae015 introduced a bug caused by
code assuming registers started at X5, not X0.

Fixes #4138.

R=rsc
CC=golang-dev, remy
https://golang.org/cl/6558043

R=rsc, r
CC=golang-dev
https://golang.org/cl/6552061

When I was a lad (and well past), users were in /usr;
now they're somewhere else, I'm told.
Kids today.

Fixes #4122.

R=golang-dev, dsymonds, rsc
CC=golang-dev
https://golang.org/cl/6552060

Fixes #3670.

R=ken2
CC=golang-dev
https://golang.org/cl/6542058

- remove ambiguous 'it'
- use a lower-case PackageName in the example

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6552057

The width was not being set on the address, which meant
that the optimizer could not find variables that overlapped
with it and mark them as having had their address taken.
This let to the compiler believing variables had been set
but never used and then optimizing away the set.

Fixes #4129.

R=ken2
CC=golang-dev
https://golang.org/cl/6552059

Fixes #4047.

R=iant, r
CC=golang-dev
https://golang.org/cl/6500065

Use the debug data for enums on windows.

Fixes #4120.

R=alex.brainman
CC=golang-dev
https://golang.org/cl/6545047

Add support for processing the COFF symbol table.

R=alex.brainman
CC=golang-dev
https://golang.org/cl/6551045

Fixes #4082.

R=dsymonds
CC=golang-dev
https://golang.org/cl/6545055

Fixes #4114.

R=golang-dev, iant, rsc, iant, devon.odell
CC=golang-dev
https://golang.org/cl/6553050

R=rsc, r
CC=gobot, golang-dev
https://golang.org/cl/6532049

These talks have been moved to the go.talks sub-repository:
        https://code.google.com/p/go.talks

R=rsc, r
CC=gobot, golang-dev
https://golang.org/cl/6529052

R=rsc, golang-dev
CC=golang-dev
https://golang.org/cl/6528044

Fixes #2446.

R=ken2
CC=golang-dev
https://golang.org/cl/6557044

R=rsc
CC=golang-dev
https://golang.org/cl/6554043

We only pass lower 32 bits of file offset to asm routine.

R=r, dave, rsc
CC=golang-dev
https://golang.org/cl/6499118

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6548046

*** There is an API change here: the introduction of the
LatinOffset int in the RangeTable struct. ***

* Avoid checking Latin range multiple times for non-Latin runes.
* Use linear search when it is faster than binary search.

go test -calibrate runs the calibration for where the linear/binary
crossover should be.

benchmark                       old MB/s     new MB/s  speedup
BenchmarkFields            36.27        41.43    1.14x
BenchmarkFieldsFunc        36.23        41.38    1.14x

The speedup here is evenly split between the linear scans
and the LatinOffset change. Both are about 1.07x.

R=r
CC=bradfitz, gobot, golang-dev
https://golang.org/cl/6526048

OpenBSD now requires ELF binaries to have a PT_NOTE that identifies
it as an OpenBSD binary. Refactor the existing NetBSD ELF signature
code and implement support for OpenBSD ELF signatures.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6489131

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6546044

Tests behavior of Once when initialization function panics.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6554047

The calculation of datsize is redundant.

R=golang-dev, seed, rsc
CC=golang-dev
https://golang.org/cl/6503122

Otherwise they sum up between GCs.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6535048

R=golang-dev, agl
CC=golang-dev
https://golang.org/cl/6535057

Previously we tried to parse email constraints as the maximum base
distance (which is unused and must be omitted according to RFC 5280)
because they share the same tag number. Rather than complicate the
code further, this CL just ignores the unused values.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6552044

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6544044

Always process the DWARF info, even when the const value is determined
using the debug data block. This ensures that the injected enum is
removed and future loads of the same constant do not trigger
inconsistent definitions.

Add tests for issues 2470 and 4054.
Fixes #4054.

R=golang-dev, fullung, dave, rsc, minux.ma
CC=golang-dev
https://golang.org/cl/6501101

R=golang-dev, r, minux.ma, dave, bradfitz
CC=golang-dev
https://golang.org/cl/6532052

In a range loop, the presence of a value implies the presence of a key.
However, the presence of a value as an *ast.Ident does not imply that
the key is also an *ast.Ident, thus leading to a panic any time the
two argument form is used where the key is not an identifier.

R=golang-dev, adg, r
CC=golang-dev
https://golang.org/cl/6540045

Previously, an import block such as
	import (
        	"net"

                "stack"
        )
would not permit ":Drop stack" to work because we were aborting
the scan early, which is only correct when Import is in operation.

R=golang-dev, franciscossouza
CC=golang-dev
https://golang.org/cl/6532053

(see also issue 3961).

hexdump -c testdata/crlf.input
0000000   /   *  \r  \n  \t   S   o   u   r   c   e       c   o   n   t
0000010   a   i   n   i   n   g       C   R   /   L   F       l   i   n
0000020   e       e   n   d   i   n   g   s   .  \r  \n  \t   T   h   e
0000030       g   o   f   m   t   '   e   d       o   u   t   p   u   t
0000040       m   u   s   t       o   n   l   y       h   a   v   e
0000050   L   F  \r  \n  \t   l   i   n   e       e   n   d   i   n   g
0000060   s   .  \r  \n   *   /  \r  \n   p   a   c   k   a   g   e
0000070   m   a   i   n  \r  \n  \r  \n   f   u   n   c       m   a   i
0000080   n   (   )       {  \r  \n  \t   /   /       l   i   n   e
0000090   c   o   m   m   e   n   t  \r  \n  \t   p   r   i   n   t   l
00000a0   n   (   "   h   e   l   l   o   ,       w   o   r   l   d   !
00000b0   "   )       /   /       a   n   o   t   h   e   r       l   i
00000c0   n   e       c   o   m   m   e   n   t  \r  \n  \t   p   r   i
00000d0   n   t   l   n   (   )  \r  \n   }  \r  \n
00000db

hexdump -c testdata/crlf.golden
0000000   /   *  \n  \t   S   o   u   r   c   e       c   o   n   t   a
0000010   i   n   i   n   g       C   R   /   L   F       l   i   n   e
0000020       e   n   d   i   n   g   s   .  \n  \t   T   h   e       g
0000030   o   f   m   t   '   e   d       o   u   t   p   u   t       m
0000040   u   s   t       o   n   l   y       h   a   v   e       L   F
0000050  \n  \t   l   i   n   e       e   n   d   i   n   g   s   .  \n
0000060   *   /  \n   p   a   c   k   a   g   e       m   a   i   n  \n
0000070  \n   f   u   n   c       m   a   i   n   (   )       {  \n  \t
0000080   /   /       l   i   n   e       c   o   m   m   e   n   t  \n
0000090  \t   p   r   i   n   t   l   n   (   "   h   e   l   l   o   ,
00000a0       w   o   r   l   d   !   "   )       /   /       a   n   o
00000b0   t   h   e   r       l   i   n   e       c   o   m   m   e   n
00000c0   t  \n  \t   p   r   i   n   t   l   n   (   )  \n   }  \n
00000cf

R=rsc
CC=golang-dev
https://golang.org/cl/6526052

Fixes #4100.

R=adg, r, dave
CC=golang-dev
https://golang.org/cl/6535055

we need to restore %PATH% before calling "dist banner", so that
it could suggest the user to add %GOROOT%/bin to %PATH% if necessary.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6525049

use a function to get stdout and stderr, instead of depending
on a specific libc implementation.
also make test/run.go replace \r\n by \n before comparing
output.

        Fixes #2121.
        Part of issue 1741.

R=alex.brainman, rsc, r, remyoudompheng
CC=golang-dev
https://golang.org/cl/5847068

We use pkg path instead of file name (which contains $WORK) in section symbols names.

R=golang-dev, fullung, rsc, iant
CC=golang-dev
https://golang.org/cl/6445085