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

The same rules apply for make arguments.

R=r, rsc, iant, ken
CC=golang-dev
https://golang.org/cl/7656043

For details see the cited issue.

Fixes #4793.

R=rsc, r, iant, ken
CC=golang-dev
https://golang.org/cl/7524044

428 Precondition Required
429 Too Many Requests
431 Request Header Fields Too Large
511 Network Authentication Required

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7678043

Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7700043

The variable is named b not bit.

R=golang-dev, agl
CC=golang-dev
https://golang.org/cl/7699043

Fixes #4878.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7420052

R=ken2
CC=golang-dev
https://golang.org/cl/7694043

Let's just see what breaks.

R=golang-dev, bradfitz, adg
CC=golang-dev
https://golang.org/cl/7693043

R=ken2
CC=golang-dev
https://golang.org/cl/7626045

R=ken2, ken
CC=golang-dev
https://golang.org/cl/7483045

Tell Windows users how to update Mercurial's library.zip to add some missing dependencies.

Fixes #4745.

R=golang-dev, patrick.allen.higgins, minux.ma, adg
CC=golang-dev
https://golang.org/cl/7558043

"go build" and "go install" were mixing stdout and stderr
from the toolchain, then putting it all on stdout. With this
change, it stays mixed, and is sent to stderr. Because
the toolchain does not create output in a clean compile/install,
sending all output to stderr makese more sense.

Also fix test.bash because of "mktemp: too few X's
in template `testgo'" on Linux.

Fixes #4917.

R=golang-dev, rsc, adg
CC=golang-dev
https://golang.org/cl/7393073

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/7690043

Dynimpname was getting too confusing.
Replace flag-like checks with tests of s->type.

R=ken2
CC=golang-dev
https://golang.org/cl/7594046

Also move symbol names onto lines by themselves: some are very long.
Show relocations.

R=ken2
CC=golang-dev
https://golang.org/cl/7689043

This makes binaries work with OS X nm.

R=ken2
CC=golang-dev
https://golang.org/cl/7558044

I guess it would be too much to ask for gcc on my machine to give
the same errors as gcc on the builder machines.

R=ken2
CC=golang-dev
https://golang.org/cl/7686044