A connection shouldn't be made available
for re-use until its body has been consumed.

(except in the case of pipelining, which isn't
implemented yet)

This CL fixes some issues seen with heavy load
against Amazon S3.

Subtle implementation detail: to prevent a race
with the client requesting a new connection
before previous one is returned, we actually
have to call putIdleConnection _before_ we
return from the final Read/Close call on the
http.Response.Body.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/4351048

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/4315049

R=golang-dev, rsc1, peterGo, bsiegert, r, mattn
CC=golang-dev
https://golang.org/cl/4271057

The transport readLoop was waiting forever for the client to
read the non-existent body before proceeding to read the next
request.

R=rsc
CC=golang-dev
https://golang.org/cl/4357051

R=r, r2, rsc1, rsc, jacek.masiulaniec
CC=golang-dev
https://golang.org/cl/4344062

TBR=r
CC=golang-dev
https://golang.org/cl/4351047

The error will only occur for invalid patterns, but without this
error path there is no way to know that Glob has failed due to
an invalid pattern.

R=rsc
CC=golang-dev
https://golang.org/cl/4346044

Write never writes less than the buffer size and WriteString takes advantage
of the copy built-in to improve write efficiency.

R=rsc, ality, rog
CC=golang-dev
https://golang.org/cl/4344060

According to RFC 3986: "For consistency, URI producers
and normalizers should use uppercase hexadecimal digits
for all percent-encodings."  Using lower case characters
makes it incompatible with Google APIs when signing OAuth requests.

R=golang-dev, rsc1, rsc
CC=golang-dev
https://golang.org/cl/4352044

R=golang-dev, r2
CC=golang-dev, mrjones
https://golang.org/cl/4348048

R=r
CC=golang-dev
https://golang.org/cl/4353047

Fixes #1637.

R=rsc, rh, msolo
CC=golang-dev
https://golang.org/cl/4317049

R=rsc
CC=golang-dev
https://golang.org/cl/4331050

Enables the use of https servers in tests.

R=agl, rsc, agl1
CC=golang-dev
https://golang.org/cl/4284063

Ideally we'd compile all example files during
the build, though.

Fixes #1660

R=r
CC=golang-dev
https://golang.org/cl/4358049

Fixes #1651.

R=rsc
CC=golang-dev
https://golang.org/cl/4300054

R=paulzhol, ality, r, fhs
CC=golang-dev
https://golang.org/cl/4316054

these were needed by packages in crypto/ and by io/ioutil

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/4350047

R=r, peterGo
CC=golang-dev
https://golang.org/cl/4344053

R=rsc, ality, r, r2
CC=golang-dev
https://golang.org/cl/4149046

CC=golang-dev
https://golang.org/cl/3816043

R=r, r2, rsc1
CC=golang-dev
https://golang.org/cl/4343045

Forgot this one in the previous CL

R=rsc, r
CC=golang-dev
https://golang.org/cl/4345043

R=ken2
CC=golang-dev
https://golang.org/cl/4316051

R=rsc
CC=golang-dev
https://golang.org/cl/4350043

Fixes #1610.

R=rsc
CC=golang-dev
https://golang.org/cl/4355042

R=golang-dev, adg, peterGo
CC=golang-dev
https://golang.org/cl/4274072

R=golang-dev, rsc1
CC=golang-dev
https://golang.org/cl/4347041

R=peterGo, rsc, Joe Poirier
CC=golang-dev
https://golang.org/cl/4280087

Since Go code can deadlock, this lets a testsuite driver set a
time limit for the test to run.  This is simple but imperfect,
in that it only catches deadlocks in Go code, not in the
runtime scheduler.

R=r, rsc, iant2
CC=golang-dev
https://golang.org/cl/4326048

Also fix a bug: precision was in terms of bytes; should be runes.
Fixes #1652.

R=rsc, bradfitzgo, r2, bradfitzwork
CC=golang-dev
https://golang.org/cl/4280086

It was speculation.
Also replace one silly word with an English replacement.

R=golang-dev, bradfitzgo
CC=golang-dev
https://golang.org/cl/4339041

R=rsc
CC=golang-dev
https://golang.org/cl/4280079

Fix resolv_windows.go to support recent DNS-lookup changes

R=brainman, rsc1, rsc
CC=golang-dev
https://golang.org/cl/4300045

doc.go contains the details. The short story:
- command line is passed to the binary
- a new flag, -file, is needed to name files
- known flags have the "test." prefix added for convenience.
- gotest-specific flags are trimmed from the command line.

The effect should be that most existing uses are unaffected,
the ability to name files is still present, and it's nicer to use.
The downside is a lot more code in gotest.

Also allow a test to be called just Test.

R=rsc, niemeyer, rog, r2
CC=golang-dev
https://golang.org/cl/4307049

TBR=r
CC=golang-dev
https://golang.org/cl/4333048

R=r, r2
CC=golang-dev
https://golang.org/cl/4307047

This will make the fmt code easier to gofix
when the new reflect interface is ready.

R=r
CC=golang-dev
https://golang.org/cl/4324043

also: minor fix to parser

Note: gotest won't run the gotype test yet until
it permits TestXXX functions where XXX is empty.

R=r
CC=golang-dev
https://golang.org/cl/4300053

- don't consume '\n' as part of line comment
(otherwise grammars where '\n' are tokens won't
see them after a line comment)

- permit line comments to end in EOF

R=r
CC=golang-dev
https://golang.org/cl/4277089