R=r, rsc
CC=golang-dev
https://golang.org/cl/963042

noticed this as I was submitting the previous CL :(

R=r
CC=golang-dev
https://golang.org/cl/989045

R=r, rsc, gri
CC=golang-dev
https://golang.org/cl/887045

Plus:
- calibration "test" - include in tests with gotest -calibrate
- basic Mul benchmark
- extra multiplication tests
- various cleanups

This change improves multiplication speed of numbers >= 30 words
in length (current threshold; found empirically with calibrate):

The multiplication benchmark (multiplication of a variety of long numbers)
improves by ~35%, individual multiplies can be significantly faster.

gotest -benchmarks=Mul
big.BenchmarkMul	     500	   6829290 ns/op (w/ Karatsuba)
big.BenchmarkMul	     100	  10600760 ns/op

There's no impact on pidigits for -n=10000 or -n=20000
because the operands are are too small.

R=rsc
CC=golang-dev
https://golang.org/cl/1004042

Fixes #610.

R=adg
CC=golang-dev
https://golang.org/cl/1006044

Fixes #483.

R=dsymonds, dsymonds1
CC=golang-dev
https://golang.org/cl/965044

Fixes #750.

R=adg
CC=golang-dev
https://golang.org/cl/988043

Fixes #743.

R=r, rsc
CC=golang-dev
https://golang.org/cl/944044

R=r
CC=golang-dev
https://golang.org/cl/1013042

R=ken2
CC=golang-dev
https://golang.org/cl/944043

Rather than confuse people by linking to a spec we
don't fully support, let them just use the package docs.

R=r, rsc
CC=golang-dev
https://golang.org/cl/1016041

user time for pidigits -s -n=10000:
6.466s w/ adds
7.138s w/ shifts

R=rsc
CC=golang-dev
https://golang.org/cl/1021041

R=r
CC=golang-dev
https://golang.org/cl/989044

Fixes #732.

R=ken2
CC=golang-dev
https://golang.org/cl/956050

R=r
CC=golang-dev
https://golang.org/cl/989042

R=r
CC=golang-dev
https://golang.org/cl/943047

R=r
CC=golang-dev, rog
https://golang.org/cl/811046

       (composite literals in control clauses only need
       parentheses if the literals start with a type name)

R=rsc
CC=golang-dev
https://golang.org/cl/962045

where index is a composite literal

R=rsc
CC=golang-dev
https://golang.org/cl/961044

	   within an if, for, or switch control clause

R=rsc
CC=golang-dev
https://golang.org/cl/943046

Fixes #748.

R=rsc
CC=golang-dev
https://golang.org/cl/946043

R=r, cw
CC=golang-dev
https://golang.org/cl/952041

This fixes a crash seen when viewing a directory list.

Fixes #747.

R=gri
CC=golang-dev, rsc
https://golang.org/cl/1010042

This matches the old JSON package behavior.
All lowercase names are not as standard as I believed,
and it seems less surprising to need to write

	type T struct { Field string "field" }

to get lower case (behavior after this CL) than it does to need
to write

	type T struct { Field string "Field" }

to preserve the case (behavior before this CL).

Also test and  fix unmarshal into non-nil interface
value or pointer.

Fixes #744.

R=r
CC=golang-dev
https://golang.org/cl/1013041

Added goroutine; got simpler.

Fixes deadlock when doing Read+Close
or Write+Close on same end.

R=r, cw
CC=golang-dev
https://golang.org/cl/994043

R=rsc
CC=golang-dev
https://golang.org/cl/949043

Fixes #734.

R=rsc, r
CC=golang-dev
https://golang.org/cl/975042

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/988042

R=rsc, rsc1
CC=golang-dev
https://golang.org/cl/878046

R=rsc
CC=golang-dev
https://golang.org/cl/897042

R=rsc
CC=golang-dev
https://golang.org/cl/1014041

R=rsc
CC=golang-dev
https://golang.org/cl/968043

R=r, rsc
CC=golang-dev
https://golang.org/cl/978042

R=rsc
CC=golang-dev
https://golang.org/cl/937042

R=ken2, r, ken3
CC=golang-dev
https://golang.org/cl/1006041

R=adg, gri
CC=golang-dev, r
https://golang.org/cl/1008042

Depends on CL 957045, 980043, 1004043.
Fixes #715.

R=agl1, agl
CC=golang-dev
https://golang.org/cl/943043

Adds two more methods, Timeout and Temporary.
Implemented by os.Errno too.  The intent is to make
the checks for os.EAGAIN a little less clunky.
It should also let us clean up a bug that Mike Solomon
pointed out: if a network server gets an "out of file descriptors"
error from Accept, the listener should not stop.
It will be able to check this because that error would
have Temporary() == true.

Also clean up some underscore names.

Fixes #442.

R=r
CC=golang-dev, msolo
https://golang.org/cl/957045

R=rsc, r
CC=golang-dev
https://golang.org/cl/1010041

R=r
CC=golang-dev
https://golang.org/cl/1004043