The strconv package has removed Atob, AtoF{64,32} and Ftoa.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5540057

Fixes #2672.

R=golang-dev, lvd
CC=golang-dev, remy
https://golang.org/cl/5543058

(This was missing in the last change because I uploaded it from the
wrong machine.)

Large pastes previously misbehaved because the code tried reading from
the terminal before checking whether an line was already buffered.
Large pastes can cause multiples lines to be read at once from the
terminal.

R=bradfitz
CC=golang-dev
https://golang.org/cl/5542049

exp/proxy provides client support for tunneling connections through
various proxies.

This is an initial, incomplete sketch of the code to lay down an
API.

R=golang-dev, r, r, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/5490062

R=golang-dev, dave, minux.ma
CC=golang-dev
https://golang.org/cl/5545044

R=golang-dev
CC=golang-dev
https://golang.org/cl/5539061

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5528101

R=golang-dev, bradfitz, gri
CC=golang-dev
https://golang.org/cl/5539059

Fixes #2694

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5541057

R=golang-dev, r, bradfitz
CC=golang-dev
https://golang.org/cl/5543056

Also verified in external test suite that this fixes MySQL
resource exhaustion problems, and also exposed a double-free
bug in the gosqlite3 driver (where gosqlite3 either got lucky
before, or was working around this bug)

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5544057

The implementation is similar to the one from the double-conversion
library used in the Chrome V8 engine.

                            old ns/op   new ns/op  speedup
BenchmarkAppendFloatDecimal      591         480      1.2x
BenchmarkAppendFloat            2956         486      6.1x
BenchmarkAppendFloatExp        10622         503     21.1x
BenchmarkAppendFloatNegExp     40343         483     83.5x
BenchmarkAppendFloatBig         2798         664      4.2x

See F. Loitsch, ``Printing Floating-Point Numbers Quickly and
Accurately with Integers'', Proceedings of the ACM, 2010.

R=rsc
CC=golang-dev, remy
https://golang.org/cl/5502079

Fixes #2696.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5543055

R=rsc, r
CC=golang-dev
https://golang.org/cl/5545048

s/pseudo-random fair/uniform pseudo-random/
This careful word choice soothes the theoretically inclined.

R=golang-dev, rsc, gri
CC=golang-dev
https://golang.org/cl/5528098

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5540056

R=golang-dev, bradfitz, r, rsc
CC=golang-dev
https://golang.org/cl/5539056

Fixes #2695.

R=golang-dev, mpimenov, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/5545052

Merge package files in the go/ast MergePackageFiles
function always	    in the same order (sorted by filename)
instead	 of map iteration order to obtain the same
package	 file each time.  This functionality is used
by godoc when displaying packages in ?m=src mode.

Also: minor cleanup in godoc.go.

R=rsc
CC=golang-dev
https://golang.org/cl/5540054

This CL improves the xml package in the following ways:

- makes its interface match established conventions
- brings Marshal and Unmarshal closer together
- fixes a large number of bugs and adds tests
- improves speed significantly
- organizes and simplifies the code

Fixes #2426.
Fixes #2406.
Fixes #1989.

What follows is a detailed list of those changes.

- All matching is case sensitive without special processing
  to the field name or xml tag in an attempt to match them.
  Customize the field tag as desired to match the correct XML
  elements.

- Flags are ",flag" rather than "flag". The names "attr",
  "chardata", etc, may be used to name actual XML elements.

- Overriding of attribute names is possible with "name,attr".

- Attribute fields are marshalled properly if they have
  non-string types. Previously they were unmarshalled, but were
  ignored at marshalling time.

- Comment fields tagged with ",comment" are marshalled properly,
  rather than being marshalled as normal fields.

- The handling of the Any field has been replaced by the ",any"
  flag to avoid unexpected results when using the field name for
  other purposes, and has also been fixed to interact properly
  with name paths. Previously the feature would not function
  if any field in the type had a name path in its tag.

- Embedded struct support fixed and cleaned so it works when
  marshalling and also when using field paths deeper than one level.

- Conflict reporting on field names have been expanded to cover
  all fields. Previously it'd catch only conflicts of paths
  deeper than one level. Also interacts correctly with embedded
  structs now.

- A trailing '>' is disallowed in xml tags. It used to be
  supported for removing the ambiguity between "attr" and "attr>",
  but the marshalling support for that was broken, and it's now
  unnecessary. Use "name" instead of "name>".

- Fixed docs to point out that a XMLName doesn't have to be
  an xml.Name (e.g. a struct{} is a good fit too). The code was
  already working like that.

- Fixed asymmetry in the precedence of XML element names between
  marshalling and unmarshalling. Marshal would consider the XMLName
  of the field type before the field tag, while unmarshalling would
  do the opposite. Now both respect the tag of the XMLName field
  first, and a nice error message is provided in case an attempt
  is made to name a field with its tag in a way that would
  conflict with the underlying type's XMLName field.

- Do not marshal broken "<???>" tags when in doubt. Use the type
  name, and error out if that's not possible.

- Do not break down unmarshalling if there's an interface{} field
  in a struct.

- Significant speed boost due to caching of type metadata and
  overall allocation clean ups. The following timings reflect
  processing of the the atom test data:

  Old:

  BenchmarkMarshal           50000             48798 ns/op
  BenchmarkUnmarshal          5000            357174 ns/op

  New:

  BenchmarkMarshal          100000             19799 ns/op
  BenchmarkUnmarshal         10000            128525 ns/op

R=cw, gustavo, kevlar, adg, rogpeppe, fullung, christoph, rsc
CC=golang-dev
https://golang.org/cl/5503078

Fixes godoc text mode (i.e., URL?m=text).

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5545043

- the main changes are removing the Doc suffix
  from the exported types, so instead of
  doc.TypeDoc one will have doc.Type, etc.

- All exported types now have a Name (or Names) field.
  For Values, the Names field lists all declared variables
  or constants.

- Methods have additional information about where they are
  coming from.

- There's a mode field instead of a bool to
  control the package's operation, which makes
  it easier to extend w/o API changes.

Except for the partially implemented new Method type,
this is based on existing code. A clean rewrite is in
progress based on this new API.

R=rsc, kevlar
CC=golang-dev
https://golang.org/cl/5528060

R=rsc, adg
CC=golang-dev
https://golang.org/cl/5533082

- remove wrapper.go from testing package (not needed anymore)

Fixes #1000.

R=rsc, golang-dev, n13m3y3r
CC=golang-dev
https://golang.org/cl/5502074

Only ParseFile, ParseDir, and ParseExpr are used in the tree.
If partial parsing of code is required, it is fairly simple
to wrap the relevant piece of code into a dummy package for
parsing (see parser.ParseExpr).

Also: minor cleanups.

R=rsc
CC=golang-dev
https://golang.org/cl/5535055

These functions are mostly of interest for debugging; the
number of bytes written is uninteresting.

R=r, bradfitz
CC=golang-dev
https://golang.org/cl/5540046

Fixes #2686.

R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/5528089

Now it works to run 'go install' (no args) in cmd/go.

Fixes #2679.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5543046

TBR=gri
CC=golang-dev
https://golang.org/cl/5528090

Fixes #2681.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5540047

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5540048

Fixes #2688

R=golang-dev, gri, rsc
CC=golang-dev
https://golang.org/cl/5539050

Fixes #2331

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5544045

By the time a Unix linker gets to the end of the
command line it has forgotten what you told it
at the beginning of the command line, so you
have to put library arguments (like -lm) at the end.

R=golang-dev, r, bradfitz
CC=golang-dev
https://golang.org/cl/5541043

Pointed out by nekotaroh in issue 2645

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5539045

benchmark                   old ns/op   new ns/op   delta
BenchmarkFormatFloatDecimal      3765        1386    -63%

R=rsc
CC=golang-dev, remy
https://golang.org/cl/5494060

Now only godoc imports go/doc.

R=gri
CC=golang-dev
https://golang.org/cl/5541045

Comment described the correct condition
but the code did not implement it.

Fixes #2625.

R=remyoudompheng
CC=golang-dev
https://golang.org/cl/5530082

Fixes #2622

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5533077

Also update default app and version to be correct.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5541044