Also, implement a global OPTIONS * handler, like Apache.

Permit sending "*" requests to handlers, but not path-based
(ServeMux) handlers.  That means people can go out of their
way to support SSDP or SIP or whatever, but most users will be
unaffected.

See RFC 2616 Section 5.1.2 (Request-URI)
See RFC 2616 Section 9.2 (OPTIONS)

Fixes #3692

R=rsc
CC=golang-dev
https://golang.org/cl/6868095

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6912063

Fixes #3712

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6902069

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6923051

Fixes #4525.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6929049

Fixes #4394.

R=iant, bradfitz, rsc, remigius.gieben
CC=golang-dev
https://golang.org/cl/6847125

This check for BADWIDTH might happen while in defercheckwidth, making it raise errors for non-erroneous situations.

Fixes #4495.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6927043

Fixes #3560.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6886047

Putting it before the Index (where it is now) is wrong:
we don't even know what's in the package yet.

Fixes #4484.

R=adg, dsymonds
CC=golang-dev
https://golang.org/cl/6868071

Suggested by Paul Borman.

R=golang-dev, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/6930043

* note end-of-line and EOF behavior for ReadLine
* diagnose broken Readers

Fixes #3825.
Fixes #4276.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/6907060

Fixes #3666.
Fixes #3680.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6899054

Fixes #4490

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6924044

We have been using all three terms "indices", "indexes",
and "index expressions" indiscriminatly for index values.
With this change, "index" refers to an index value,
"indices" is the plural of "index", and "index expression"
refers to an array, slice, or map indexed by an index: a[x].

R=r, rsc, iant, ken, mtj
CC=golang-dev
https://golang.org/cl/6912056

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6912062

R=mikioh.mikioh, rsc
CC=golang-dev
https://golang.org/cl/6900050

Fixes #4512.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6917043

Also fix spurious & in example.

Fixes #4349.
Fixes #4489.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6905058

Can happen in both request and response.
Also use it in one place that wasn't.

Fixes #3997.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6903057

Fixes #4492.

% go version
go version devel +6b602ab487d6 Sat Dec 08 14:43:00 2012 +0100 linux/amd64

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6906058

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6904061

The reported decrease in memory usage is about 5%.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6902064

New in Go 1 will be nanosecond precision in the result of time.Now on Linux.
This will break code that stores time in external formats at microsecond
precision, reads it back, and expects to get exactly the same time.

Code like that can be fixed by using time.Now().Round(time.Microsecond)
instead of time.Now() in those contexts.

R=golang-dev, bradfitz, iant, remyoudompheng
CC=golang-dev
https://golang.org/cl/6903050

Fixes #4252.

R=rsc, golang-dev, mirtchovski, daniel.morsing, dave, lvd
CC=golang-dev
https://golang.org/cl/6856126

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6901056

This makes sure the outputs do not change for a fixed seed.
See also https://golang.org/cl/6905049.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6907048

This changes the output of

rand.Seed(0)
perm := rand.Perm(100)

When giving the same seeds to Go 1.0 and Go 1.1 programs
I would like them to generate the same random numbers.

««« original CL description
math/rand: remove noop iteration in Perm

The first iteration always do `m[0], m[0] = m[0], m[0]`, because
`rand.Intn(1)` is 0.

fun note: IIRC in TAOCP version of this algorithm, `i` goes
backward (n-1->1), meaning that the "already" shuffled part of the
array is never altered betweens iterations, while in the current
implementation the "not-yet" shuffled part of the array is
conserved between iterations.

R=golang-dev
CC=golang-dev
https://golang.org/cl/6845121

»»»

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6905049

R=rsc
CC=golang-dev
https://golang.org/cl/6889052

Fixes #4457.

R=rsc, iant, r, ken
CC=golang-dev
https://golang.org/cl/6862046

gotype can now handle much of the standard library.

- marked packages which have type checker issues
- this CL depends on CL 6846131

R=rsc
CC=golang-dev
https://golang.org/cl/6850130

Also:
- better handling of type assertions
- implemented built-in error type
- first cut at handling variadic function signatures
- several bug fixes

R=rsc, rogpeppe
CC=golang-dev
https://golang.org/cl/6846131

R=rsc
CC=golang-dev
https://golang.org/cl/6867062

The spec didn't preclude invalid type assertions and
type switches, i.e., cases where a concrete type doesn't
implement the interface type in the assertion in the first
place. Both, the gc and gccgo compiler exclude these cases.
This is documenting the status quo.

Also:
- minor clean up of respective examples
- added sentence about default case in select statements

Fixes #4472.

R=rsc, iant, r, ken
CC=golang-dev
https://golang.org/cl/6869050

Fixes #2615.

R=dave, minux.ma, iant, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/6847078

Also fixes a necessary TODO in the process.

Fixes #4126

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6869053

R=rsc, golang-dev
CC=golang-dev
https://golang.org/cl/6884046

The fixjmp step eliminates redundant chains of JMP
instructions that are produced by the compiler during
code generation.

It is already implemented in gc, and can be adapted to 6c/8c with
the exception that JMPs refer to destination by pc instead of by
pointer. The algorithm is modified to operate on Regs instead of Progs
for this reason. The pcs are already restored later by regopt.

R=goalng-dev, rsc
CC=golang-dev
https://golang.org/cl/6865046

Add missing file that should have been included in CL 6854063 / 5eac1a2d6fc3

R=remyoudompheng, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6891049

The 0-length part is fine, but some callers that write 0 bytes
also pass nil as the data pointer, and the Plan 9 kernel kills the
process with 'invalid address in sys call' in that case.

R=ken2
CC=golang-dev
https://golang.org/cl/6862051

R=gri
CC=golang-dev
https://golang.org/cl/6890047