In cmd/go's 'go help testflag':
* Rewrite list of flags to drop test. prefix on every name.
* Sort list of flags.
* Add example of using -bench to match all benchmarks.

In testing:
* Remove mention of undefined 'CPU group' concept.

Fixes #4488.
Fixes #4508.

R=adg
CC=golang-dev
https://golang.org/cl/7288053

R=gri, rsc
CC=golang-dev
https://golang.org/cl/7280044

Fixes #3696.

R=rsc
CC=golang-dev
https://golang.org/cl/7133051

* Document Parse's zone interpretation.
* Add ParseInLocation (API change).
* Recognize "wrong" time zone names, like daylight savings time in winter.
* Disambiguate time zone names using offset (like winter EST vs summer EST in Sydney).

The final two are backwards-incompatible changes, but I believe
they are both buggy behavior in the Go 1.0 versions; the old results
were more wrong than the new ones.

Fixes #3604.
Fixes #3653.
Fixes #4001.

R=adg
CC=golang-dev
https://golang.org/cl/7288052

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7284047

Code fix by Alex Bramley.

Fixes #4064.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7289049

R=golang-dev, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/7278050

This only affects code (with exception of lookupProtocol)
that is only executed on older versions of Windows.

R=rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7293043

Remove the previous comment examples.

R=golang-dev, minux.ma, adg
CC=golang-dev
https://golang.org/cl/7220048

* Avoid treating CALL fn(SB) as justification for introducing
and tracking a registerized variable for fn(SB).

* Remove USED(n) after declaration and zeroing of n.
It was left over from when the compiler emitted more
aggressive set and not used errors, and it was keeping
the optimizer from removing a redundant zeroing of n
when n was a pointer or integer variable.

Update #597.

R=ken2
CC=golang-dev
https://golang.org/cl/7277048

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7292043

Fixes #4085.

R=ken2
CC=golang-dev
https://golang.org/cl/7277047

It accepts all the build flags.
Say that instead of making a copy that will go stale.

Fixes #4742.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7229081

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7261043

(Still valid XML.)

Fixes #3354.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7288047

Fixes #4748.

R=ken2
CC=golang-dev
https://golang.org/cl/7261044

Unify with array/slice errors, which were already good.

Fixes #4232.

R=ken2
CC=golang-dev
https://golang.org/cl/7271046

Fixes #3915.
Fixes #3923.

R=ken2
CC=golang-dev
https://golang.org/cl/7281044

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7275045

Those symbols are only allowed during imports;
the parser may expect them but saying that doesn't help users.

Fixes #3434.

R=ken2
CC=golang-dev
https://golang.org/cl/7277045

More efficient, less racy code.

Fixes #4014.

R=ken2, ken
CC=golang-dev
https://golang.org/cl/7275047

For consistency with conversions that look like function calls,
conversions that don't look like function calls now allow an
optional trailing comma.

That is, int(x,) has always been syntactically valid.
Now []int(x,) is valid too.

Fixes #4162.

R=ken2
CC=golang-dev
https://golang.org/cl/7288045

Fixes #4618.

R=ken2
CC=golang-dev
https://golang.org/cl/7278048

Fixes #4667.

R=ken2
CC=golang-dev
https://golang.org/cl/7275046

R=ken2
CC=golang-dev
https://golang.org/cl/7276048

This CL also replaces similar loops in other stdlib
package tests with calls to AllocsPerRun.

Fixes #4461.

R=minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7002055

Fixes #3202. (Or rather, work around issue 3202)

R=alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/7202053

Add Order field to doc.Example and write doc comments there.

Fixes #4662.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7229071

Fixes #4743.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7284044

Fixes #4686.

R=alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/7174047

R=golang-dev, dave, alex.brainman
CC=golang-dev
https://golang.org/cl/7133064

Fixes #4620.

R=rsc
CC=golang-dev
https://golang.org/cl/7241051

Expressions involving nil, even if they can be evaluated
at compile time, do not count as Go constants and cannot
be used in const initializers.

Fixes #4673.
Fixes #4680.

R=ken2
CC=golang-dev
https://golang.org/cl/7278043

Fixes #4452.

R=ken2
CC=golang-dev
https://golang.org/cl/7241065

Fixes #4663.

R=ken2
CC=golang-dev
https://golang.org/cl/7235081

Fixes #4654.

R=ken2
CC=golang-dev
https://golang.org/cl/7229072

The spec mostly uses the term embedded.
It's too late to change the field name but at least fix the docs.

Fixes #4514.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7235080

Impossible for us to check (without sleazily reaching into the
runtime) but at least document it.

Fixes #3800.

R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/7268043

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7252045

Change the stack unwinding code to compensate for the dynamic
relocation of symbols.
Change the gc instruction GC_CALL to use a relative offset instead of
an absolute address.

R=golang-dev
CC=golang-dev
https://golang.org/cl/7248048