While we're here, downgrade DWARF to version 2.
We're not using any version 3 features, and OS X gdb
only supports version 2.

Fixes #3436.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7891044

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7909043

Still disabled. Need to fix TLS.

R=golang-dev, minux.ma, bradfitz
CC=golang-dev
https://golang.org/cl/7783044

R=golang-dev, rsc
CC=dvyukov, golang-dev
https://golang.org/cl/7879043

R=golang-dev, dvyukov, rsc
CC=golang-dev
https://golang.org/cl/7473044

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/7869043

- A note doesn't have to be in the first
comment of a comment group anymore, and
several notes may appear in the same comment
group (e.g., it is fairly common to have a
TODO(uid) note immediately following another
comment).

- Define a doc.Note type which also contains
note uid and position info.

- Better formatting in godoc output. The position
information is not yet used, but could be used to
locate the note in the source text if desired.

Fixes #4843.

R=r, cnicolaou
CC=gobot, golang-dev
https://golang.org/cl/7496048

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7856044

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7884045

Also applies camel style to test case holders.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7884043

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7554051

godef[1][2] is a third party tool for printing information about
expressions, especially the location of their definition. This can be
used to implement a "jump to definition" function. Unlike
cross-language solutions like ctags, godef does not require an index,
operates on the Go AST instead of symbols and works across packages,
including the standard library.

This patch implements two new public functions: godef-describe (C-c
C-d) and godef-jump (C-d C-j). godef-describe describes the expression
at point, printing its type, and godef-jump jumps to its definition.

[1]: https://code.google.com/p/rog-go/source/browse/exp/cmd/godef/
[2]: go get code.google.com/p/rog-go/exp/cmd/godef

R=adonovan, cw, patrick.allen.higgins, sameer
CC=golang-dev
https://golang.org/cl/7781043

R=golang-dev, dsymonds, rsc
CC=golang-dev
https://golang.org/cl/7497048

On NetBSD tv_sec is already an int64 so no need for a test.

On OpenBSD, semasleep expects a Unix time as argument,
and 1<<30 is in 2004.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7810044

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7853048

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7865044

Update #4805

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7634045

Still much to do, but this is a start.

R=golang-dev, adg, bradfitz, remyoudompheng
CC=golang-dev
https://golang.org/cl/7729046

Usually, there is no esc info when inlining, but there will be when generating inlined wrapper functions.

If we don't use this information, we get invalid addresses on the stack.

Fixes #5056.

R=golang-dev, rsc
CC=golang-dev, remyoudompheng
https://golang.org/cl/7850045

The example is the same as the FileServer one, but
it's relevant for both.

Also use strings.TrimPrefix while I'm here.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7598046

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7817044

Fixes #5063.

R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7876043

R=golang-dev, jsing
CC=golang-dev
https://golang.org/cl/7597046

Now that revision 0c029965805f is in, it's easy
to guarantee that we never access a driver.Conn
concurrently, per the database/sql/driver contract,
so we can remove this overlarge mutex.

Fixes #3857

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7707047

If LookPath in Command fails, sets a sticky error, and then
StdinPipe, StdoutPipe, or StderrPipe were called, those pipe
fds were never cleaned up.

Fixes #5071

R=golang-dev, rogpeppe
CC=golang-dev
https://golang.org/cl/7799046

The current SysAlloc implementation suffers from a signed vs unsigned
comparision bug. Since the error code from mmap is negated, the
unsigned comparision of v < 4096 is always false on error. Fix this
by switching to the darwin/freebsd/linux mmap model and leave the mmap
return value unmodified.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7870044

The files could use some attention on the
Windows side but better to wait until after
the upcoming release.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7621044

Update #4501.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7853047

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7789050

Avoids printing it every time we ask a question about the package from
the command line.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7789048

Too annoying and flaky to debug for now. Later. This
tangent has taken enough time.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7863043

Fixes #5014.

R=golang-dev, r, rsc, daniel.morsing
CC=golang-dev
https://golang.org/cl/7664043

Treat the Windows net server as uninteresting for leak
purposes too.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7818048

R=r
CC=golang-dev
https://golang.org/cl/7716049

Fixes #5005

R=golang-dev, adg, fullung
CC=golang-dev
https://golang.org/cl/7777043

The rule is not concistently followed by gc.
It appears that gccgo is ignoring it. go/types
does not implement this rule. However, both
gccgo and now go/types can compile/type-check
the entire std library (and thus all the shift
expressions occuring in it) w/o errors. For
more details see the discussion in issue 4883.

Fixes #4880.
Fixes #4881.
Fixes #4883.

R=rsc, r, iant, ken, ken, mtj, rogpeppe
CC=golang-dev
https://golang.org/cl/7707043

Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7861044

Fixes #3418.

R=golang-dev, r
CC=adg, golang-dev
https://golang.org/cl/7712045

Also print all status changes when using hg -v.

The start_status_thread call was lost during the refactoring in
https://golang.org/cl/5395044/diff/6006/lib/codereview/codereview.py
Oops.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7834044

R=golang-dev, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7744047