There is no semantic change here, just better errors.
If a function says it takes a byte, and you pass it an int,
the compiler error now says that you need a byte, not
that you need a uint8.

Groundwork for rune.

R=ken2
CC=golang-dev
https://golang.org/cl/5300042

R=ken2
CC=golang-dev
https://golang.org/cl/5299043

For example, if you are debugging an optimization
problem you can now run

        GCFLAGS=-N gotest

This is a convention for make, not for the general build,
so it may go away or be done differently in the eventual
'go' command.

The plan is that people will be able to test their code for
rune safety by doing GCFLAGS=-r.

R=golang-dev, bradfitz, lvd
CC=golang-dev
https://golang.org/cl/5294042

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5293045

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5313043

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5297043

The implementation of splitFirst was broken;
splitFirst("foo/") must be the same as splitFirst("foo").
As a result, ToAbsolute could be simplified, and as a side
effect this fixes a long-standing bug.

Thanks to Luca Greco <luca.greco@alcacoop.it> for doing
the investigation.

Fixes #1157.

R=rsc
CC=golang-dev
https://golang.org/cl/5278050

tls.Conn.Close() didn't close the underlying connection and tried to
do a handshake in order to send the close notify alert.

http didn't look for errors from the TLS handshake.

Fixes #2281.

R=bradfitz
CC=golang-dev
https://golang.org/cl/5283045

This change splits terminal handling from exp/ssh, as suggested
several times in the ssh code review.

shell.go and shell_test.go are copies from exp/ssh with minimal
changes, so don't need another full review. A future CL will remove
that code from exp/ssh.

R=bradfitz, r, dave, rsc
CC=golang-dev
https://golang.org/cl/5278049

common.go:
* simplify findAgreedAlgorithms.
* add channelExtendedData support.

messages.go:
* add clientExtendedData.

server.go:
*  use simplified findAgreedAlgorithms.

server_shell.go:
* fix shadowed err return value.

transport.go:
* introduce separate cipher, mac and compression for each direction.
* added filteredConn and packetWriter interfaces.
* newTransport requires a source of randomness.

R=golang-dev, agl, rsc
CC=golang-dev
https://golang.org/cl/5285044

Fixes #2380.

R=rsc, rogpeppe
CC=golang-dev
https://golang.org/cl/5313041

Revert workaround in compiler and
revert test for compiler workaround.

Tested that the 386 build continues to fail if
the gc change is made without the reflect change.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5312041

R=golang-dev, r, adg, r, cw
CC=golang-dev
https://golang.org/cl/5266045

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5286043

The old m[x] = 0, false syntax will be deleted
in a month or so, once people have had time to
change their code (there is a gofix in a separate CL).

R=ken2
CC=golang-dev
https://golang.org/cl/5265048

A first run at fully automating the process.
This CL supersedes https://golang.org/cl/4634114/
which I seemed to have lost.

R=golang-dev, alex.brainman, adg
CC=golang-dev
https://golang.org/cl/5273041

The Windows signtool.exe thinks our binaries are 'invalid
Win32 programs' unless the PE linker version field is 3.0
or greater.

This minor change makes it possible to successfully sign
gc-built binaries on Windows.

R=golang-dev, alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/5268045

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5299041

This should fix the 386 builds.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5298042

There's a problem that is manifesting on the 386 builders,
but this test bug is masking it.

R=adg
CC=golang-dev
https://golang.org/cl/5295042

This fixes the 386 builds.

R=golang-dev, adg, r
CC=golang-dev
https://golang.org/cl/5293043

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5298041

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/5273045

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5267049

scanner.Position is the position of the most recently
scanned token. Make sure it is invalid if there is no
token scanned and update corresponding comment. This
is particularly important when reporting errors.

Fixes #2371.

R=r
CC=golang-dev
https://golang.org/cl/5294041

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5285042

Had been allowing it for use by fmt, but it is too hard to lock down.
Fix other packages not to depend on it.

R=r, r
CC=golang-dev
https://golang.org/cl/5266054

Previously, Next would call either nextText or nextTag, but nextTag
could also call nextText. Both nextText and nextTag were responsible
for detecting "</a" end tags and "<!" comments. This change simplifies
the call chain and puts that responsibility in a single place.

R=andybalholm
CC=golang-dev
https://golang.org/cl/5263050

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5286049

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5266046

Fixes #2377.

R=r, rsc
CC=golang-dev
https://golang.org/cl/5267048

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/5272045

Fixes #2376

R=golang-dev, lvd, rsc
CC=golang-dev
https://golang.org/cl/5278048

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5284050

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5268048

Address the issue coalescing two records together when TrimLeadingSpace
is set to true.

The input

        a,b,
        c,d,e

Would result with a singled a,b,c,d,e record.
With TrailingComma set to true it should give two records.
With TrailingComma set to false it should be an error.

Fixes #2366.

R=golang-dev, go.peter.90, r
CC=golang-dev
https://golang.org/cl/5284046

Fixes #2375.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5279049

Uses a generic solution of renaming the tested package, instead of
using cryptic names for all other imports, variables and methods
in the generated _testmain.go file.

Fixes #2346.

R=golang-dev, r, adg
CC=golang-dev, rsc
https://golang.org/cl/5254061

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5275050

R=andybalholm
CC=golang-dev
https://golang.org/cl/5284042