Fixes #655.

R=rsc, aclements
CC=golang-dev
https://golang.org/cl/1981041

R=rsc
CC=golang-dev
https://golang.org/cl/1976049

Based on the observation that a great number of the types that
are copied or compared in interfaces, maps, and channels are
word-sized, this uses specialized copy and equality functions
for them that use a word instead of 4 or 8 bytes. Seems to yield
0-6% improvements in performance in the benchmarks I've run.
For example, with the regexp benchmarks:

Before:
regexp.BenchmarkLiteral   500000       3.26 µs/op
regexp.BenchmarkNotLiteral    100000      13.67 µs/op
regexp.BenchmarkMatchClass    100000      18.72 µs/op
regexp.BenchmarkMatchClass_InRange    100000      20.04 µs/op
regexp.BenchmarkReplaceAll    100000      27.85 µs/op

After:
regexp.BenchmarkLiteral   500000       3.11 µs/op
regexp.BenchmarkNotLiteral    200000      13.29 µs/op
regexp.BenchmarkMatchClass    100000      17.65 µs/op
regexp.BenchmarkMatchClass_InRange    100000      18.49 µs/op
regexp.BenchmarkReplaceAll    100000      26.34 µs/op

R=rsc
CC=golang-dev
https://golang.org/cl/1967047

Fixes #978.

R=rsc
CC=golang-dev
https://golang.org/cl/1967045

This is required for FTP and SMTP; maybe others.

R=rsc
CC=golang-dev
https://golang.org/cl/1892052

Fixes #974.

R=rsc
CC=golang-dev
https://golang.org/cl/1742057

R=iant
CC=golang-dev
https://golang.org/cl/1952047

The copy of these values in the reflect package is already
correct.

R=rsc
CC=golang-dev
https://golang.org/cl/2009044

R=golang-dev, adg1, adg
CC=golang-dev
https://golang.org/cl/2023044

R=r
CC=golang-dev
https://golang.org/cl/1933045

This way, if you later want to check things in,
you can (with appropriate authorization).
Using plain http leads to the cryptic error
abort: HTTP Method Not Allowed.

R=r
CC=golang-dev
https://golang.org/cl/1983050

R=r
CC=golang-dev, stevvooe
https://golang.org/cl/1995051

Commands written in Go depend on Go packages, so they
cannot be built by src/cmd/make.bash.  They have been
built by src/make.bash after all the packages are done, but
we want to be able to use cgo (written in Go) during the build
of package net.  To make this possible, build the commands
from src/pkg/Makefile instead of src/make.bash, so that they
are included in the package dependency analysis.

R=r
CC=golang-dev
https://golang.org/cl/1972046

Fix printf format string.

R=r
CC=golang-dev
https://golang.org/cl/1959044

$ hg p
codereview disabled: cannot open /Users/rsc/g/go/src/pkg/goplan9.googlecode.com/hg/lib/codereview/codereview.cfg
$

R=dsymonds, r
CC=golang-dev
https://golang.org/cl/1998046

obsoleted by Make.inc.

R=r
CC=golang-dev
https://golang.org/cl/2009041

Due to header key normalization/typo, the server never responds with
the protocol header in place. This breaks all (draft76) applications
that are using the protocol-header.

R=ukai, rsc
CC=golang-dev
https://golang.org/cl/1969046

R=adg, madari
CC=golang-dev
https://golang.org/cl/2025042

R=rsc
CC=golang-dev
https://golang.org/cl/1997044

R=r, rsc
CC=golang-dev
https://golang.org/cl/1999044

Despite the name, URL escaping is for a small subpiece of the URL only.
This particular URL is being emitted in an <a href=""> tag and in that
context it should be HTML escaped, not URL escaped.

In addition to fixing a bug, this change cuts a dependency chain
from go/doc to net, clearing the way for use of cgo
(which imports go/doc) during the compilation of package net.

R=gri
CC=golang-dev
https://golang.org/cl/1960050

Avoids the comment appearing in godoc syscall BUGS section.

R=brainman
CC=golang-dev
https://golang.org/cl/1966048

R=rsc
CC=golang-dev
https://golang.org/cl/2023042

R=rsc
CC=golang-dev
https://golang.org/cl/2009043

No semantic changes.

R=gri, rsc1
CC=golang-dev
https://golang.org/cl/1998045

(Assumed to be in $PATH.  all.bash ensures that
during the main build and the user must ensure it
when running commands like gotest or gomake
by hand.  This belonged in the earlier CL but I missed it.)

R=r
CC=golang-dev
https://golang.org/cl/1967048

R=r
CC=golang-dev
https://golang.org/cl/2024043

R=r, rsc
CC=brainman, golang-dev
https://golang.org/cl/2020043

R=r
CC=golang-dev
https://golang.org/cl/1981047

R=adg, r
CC=golang-dev
https://golang.org/cl/2025041

R=r
CC=golang-dev
https://golang.org/cl/1982049

Fixes #1026.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/1962048

R=rsc
CC=golang-dev
https://golang.org/cl/1995050

The runtime only passes 32 bits of file offset,
but the kernel wants 64 bits, so have to add
zeros explicitly in a copy of the arguments.

R=adg, Martin Neubauer
CC=golang-dev
https://golang.org/cl/1933044

Cannot use paren field in Node because all
instances of a given symbol name use the same Node.

Fixes #1022.

R=ken2
CC=golang-dev
https://golang.org/cl/2015043

R=rsc
CC=golang-dev
https://golang.org/cl/1959043

R=r
CC=golang-dev
https://golang.org/cl/1941052

(uint32 rather than int)

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/1958048

R=r
CC=golang-dev
https://golang.org/cl/2013043

better registerization

R=rsc
CC=golang-dev
https://golang.org/cl/1955049