If two fields have the same name but different explicit name spaces,
treat as non-conflicting. This allows parsing common XML formats
that have ns1:tag and ns2:tag in the same XML element.
Fixes #4691.

Allow setting the default name space for unadorned tags, by
writing to Decoder.DefaultSpace. This allows turned the job of
parsing common XML formats that have tag and ns2:tag in the
same XML element into the first case by setting DefaultSpace="ns1".
Fixes #3703.

Use name space attributes when decoding.
Attach name space to attributes when encoding.
Could be done with fewer annotations, but semantically correct as is.
Fixes #3526.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7227056

Fixes #5006.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7691045

Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7526046

The issue was that scvg is assigned *after* the scavenger goroutine is started,
so when the scavenger calls entersyscall() the g==scvg check can fail.
Fixes #5025.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7629045

The problem is that there are lots of dead G's from previous tests,
each dead G consumes 1 stack segment.
Fixes #5034.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7749043

Update #5005.

R=golang-dev, fullung, bradfitz
CC=golang-dev
https://golang.org/cl/7651045

Adds a new reader to filter newlines, which fixes errors seen in the
decoder chunking code. Found additional issues with whitespace handling
after the first padding character.
Fixes #4779.

R=minux.ma, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7311069

Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7592044

The system call takes an int, but the kernel stores it in a uint16.
At least one Linux system sets /proc/sys/net/core/somaxconn
to 262144, which ends up being 0 in the uint16. Avoid being tricked.

FreeBSD sources also store the backlog in a uint16.
Assume the problem is systemic and fix it everywhere.

Fixes #5030.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7480046

Noticed while doing other XML investigations.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7550045

The old code just assumed that the only thing
you can embed is a struct. Not true.

Fixes #3803.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7743043

This isn't as bad as it used to be, but add a bit
more detail to close the issue.

Fixes #3359

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7606044

R=dsymonds, dave
CC=golang-dev
https://golang.org/cl/7568045

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7739043

Also rename the go parser test to GoParse so it doesn't grab the globally useful Parse name.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7732044

Edit encoding/base64's internals and tests to match encoding/base32.

Properly handling line breaks in padding is left for another CL.

R=dsymonds
CC=golang-dev
https://golang.org/cl/7693044

Mention the syntax is defined by the regexp/syntax package.
Fixes #3953.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/7702044

Fixes #4519.

R=rsc
CC=golang-dev
https://golang.org/cl/7733044

The copy of c++filt shipped on OS X is six years old,
and in our case it does far more mangling than it
does demangling. People on non-OS X systems will
have a working nm --demangle, so this won't affect them.

$ sw_vers
ProductName:	Mac OS X
ProductVersion:	10.8.2
BuildVersion:	12C2034
$ c++filt --version
GNU c++filt 070207 20070207
Copyright 2005 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License.  This program has absolutely no warranty.
$

$ go tool nm -n revcomp | grep quoteWith
   4f560 T strconv.quoteWith
$ go tool nm -n revcomp | grep quoteWith  | c++filt
   f560 T strconv.quoteWith
$

$ nm -n revcomp | grep quoteWith
000000000004f560 t _strconv.quoteWith
$ nm -n revcomp | grep quoteWith | c++filt
000000000004f560 unsigned short _strconv.quoteWith
$

Fixes #4818.

R=golang-dev, r, bradfitz
CC=golang-dev
https://golang.org/cl/7729043

This is what pprof expects, or else it won't use the program.
And if it doesn't use the program, it gets very bad results.

Fixes #4818.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7728043

The specification says "the two arguments must be of the same
floating-point type."

R=rsc, gri
CC=golang-dev
https://golang.org/cl/7671045

Take advantage of the new terminating statement rule.

R=golang-dev, r, gri
CC=golang-dev
https://golang.org/cl/7712044

Fixes #5003.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7476047

We added -I$GOROOT/pkg/$GOOS_$GOARCH in cmd/go
(I think for use by cgo and swig, primarily) but didn't
update cmd/dist. I was testing some other code and
found that my changes built with cmd/go but failed
during the initial bootstrap. Make them match again.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7707044

Fixed package.txt and adjusted package.html to match
structure (swapped if branches).

Fixes #4861.

R=golang-dev, adg, rsc
CC=golang-dev
https://golang.org/cl/7714043

For expressions where the result type is independent
of the argument types (comparisons, conversions, rhs
of shifts), set the final expression types for those
subtrees early.

This fixes several bugs where incorrect lhs shift
operands where used (say in a comparison), but were
not reported.

Together with the changes listed below this CL fixes
many type-checker bugs.

Also:
- better documented updateExprType
- added larger comment to expr.go explaining
  the basic expression checking algorithm
- use latest definition for indices and make
  arguments; use the same code to check both
- use the same mechanism for cycle detection
  in constant expressions as for variables
  (new field Constant.visited)
- more tests for complex and make builtins
- many more and systematic tests for shifts;
  moved them into separate testfile
- in the testing code, don't compare the
  expected error pattern against itself
  (the actual message was always ignored...)
- fix affected error patterns in the test files
- various cleanups along the way

R=adonovan
CC=golang-dev
https://golang.org/cl/7432051

Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7544044

lib9: fix runcmd, removeall, and tempdir functions

cmd/dist: Include run_plan9.c and tempdir_plan9.c
        from lib9 for build, and in general consider
        file names containing "plan9" for building.

cmd/ld: provide function args for the new functions
        from lib9.

R=rsc, rminnich, ality, bradfitz
CC=golang-dev
https://golang.org/cl/7666043

Method calls on interfaces with large stored values
will call the pointer receiver method which may be
a wrapper over a method with value receiver.

This is particularly inefficient for very small bodies.
Inlining the wrapped method body saves a potentially expensive
function call.

benchmark                old ns/op    new ns/op    delta
BenchmarkSortString1K       802295       641387  -20.06%
BenchmarkSortInt1K          359914       238234  -33.81%
BenchmarkSortInt64K       35764226     22803078  -36.24%

Fixes #4707.

R=golang-dev, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/7214044

R=golang-dev, daniel.morsing
CC=golang-dev
https://golang.org/cl/7722043

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7624044

This includes a simplified resolvePath function and tests for all normal and abnormal path resolution examples described in RFC 3986, sections 5.4.1 and 5.4.2 [1]. Some of those examples failed before (see http://play.golang.org/p/F0ApSaXniv).

Also, parsing a reference "//foo" now works as expected. It was treated as an absolute path with very weird results (see http://play.golang.org/p/089b-_xoNe).

During path resolution, all dot segments are removed as described by the RFC.

A few existing tests had to be changed because they expected the wrong output.

Fixes #4700.

Fixes #4706.

[1] http://tools.ietf.org/html/rfc3986#section-5.4.1

R=rsc, adg, bradfitz
CC=golang-dev
https://golang.org/cl/7203059

Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7526045

Fixes #4987.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7713043

Fixes #5022

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7712043

Ton of FreeBSD syscall constants.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7476046

Fixes #2735

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7470048

Only clever enough to allow concurrent stress testing.

R=mikioh.mikioh, rsc
CC=golang-dev
https://golang.org/cl/7703044

R=golang-dev, minux.ma, bradfitz
CC=golang-dev
https://golang.org/cl/7704043

R=golang-dev, bradfitz, dvyukov
CC=golang-dev
https://golang.org/cl/7702043