When installing pprof into the tools directory, it needs to
have execute permissions on unix-like systems.

Fixes issues 3077.

R=golang-dev, rsc, minux.ma
CC=golang-dev
https://golang.org/cl/5675095

Before we were using "ESMTP" in the banner as a clue,
but that is not required by the RFC and breaks mailing
to smtp.yandex.ru.

Fixes #3045.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5687066

A fault during malloc might lead to the program's
first call to findfunc, which would in turn call malloc.
Don't do that.

Fixes #1777.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5689047

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5689063

R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/5686058

R=golang-dev, rsc, r, r
CC=golang-dev
https://golang.org/cl/5673093

Without -d, bison doesn't generate y.tab.h.

R=rsc
CC=golang-dev
https://golang.org/cl/5685065

by other low-level libraries, like collate.  Extra care has been given to optimize the performance
of normalizing to NFD, as this is what will be used by the collator.  The overhead of checking
whether a string is normalized vs simply decomposing a string is neglible.  Assuming that most
strings are in the FCD form, this iterator can be used to decompose strings and normalize with
minimal overhead.

R=r
CC=golang-dev
https://golang.org/cl/5676057

The supposedly overflowing variable was registerized.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5687061

Also cleanup the resolveName method.

Fixes failure on go/build declaration:
        var ToolDir = filepath.Join(...)

R=golang-dev, bradfitz
CC=golang-dev, remy
https://golang.org/cl/5681043

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5686053

Awfulness by the bucket that we hope
Fixes #3057.

R=golang-dev, mikioh.mikioh, dsymonds, r, rsc
CC=golang-dev
https://golang.org/cl/5687060

TBR=bradfitz

R=golang-dev
CC=golang-dev
https://golang.org/cl/5684050

Such variables would be put at 0(SP), leading to serious
corruptions at zero initialization.
Fixes #3084.

R=golang-dev, r
CC=golang-dev, remy
https://golang.org/cl/5683052

TBR=dsymonds

R=dsymonds
CC=golang-dev
https://golang.org/cl/5687058

Part of diagnosing the selfConnect bug
TBR=dsymonds

R=golang-dev
CC=golang-dev
https://golang.org/cl/5687057

TBR=dsymonds

R=golang-dev
CC=golang-dev
https://golang.org/cl/5683057

This doesn't run all ~750 of the tests, but most.

Progress on issue 2833

R=golang-dev, ality, rsc, r, r
CC=golang-dev
https://golang.org/cl/5625044

Fixes #3051.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5683056

Use methods for key questions.
Provide access to non-portable pieces through portable methods.
Windows and Plan 9 updated.

R=golang-dev, bradfitz, bradfitz, r, dsymonds, rsc, iant, iant
CC=golang-dev
https://golang.org/cl/5673077

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5686049

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5685061

Fixes #2935.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5684048

Fixes #2777

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5685060

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5688047

R=rsc, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/5689046

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5687052

Fixes #3013.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5683049

The alternative is to record enough information that the
trap handler know which registers contain cached globals
and can flush the registers back to their original locations.
That's significantly more work.

This only affects globals that have been written to.
Code that reads from a global should continue to registerize
as well as before.

Fixes #1304.

R=ken2
CC=golang-dev
https://golang.org/cl/5687046

This broke a build on a Linux box I hadn't updated
in awhile. The hgignore files were preventing hg status
from showing and hg purge from cleaning up junk.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5687048

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5685051

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5688048

Embedded Go images in the installer dialog and
banner boxes, Go tree cloning uses version info
from the Go tool (readme updated), the installer
allows up/down-grading and reparing of the version
that's installed, added two registry values.

R=golang-dev, bradfitz, bradfitz
CC=golang-dev
https://golang.org/cl/5683048

They are portability problems and the options are almost always zero in practice anyway.

R=golang-dev, dsymonds, r, bradfitz
CC=golang-dev
https://golang.org/cl/5688046

Added the (properly formatted) license file back,
the installer adds go\bin to the system PATH now,
the output package names are in line with the linux
and darwin versions, dist.bat extracts GOARCH in a
sane way, readme cleanup.

Tested on Windows 7 only. It would be helpful if
someone else could give it a try. See the readme
for details.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5673099

-- add driver.Value type and documentation,
   convert from interface{} to Value where
   appropriate.
-- don't say "subset" anywhere,
-- SubsetValuer -> Valuer
-- SubsetValue -> Value
-- IsParameterSubsetType -> IsValue
-- IsScanSubsetType -> IsScanValue

Fixes #2842

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/5674084

While we're here, get rid of the old names for the escaping functions.

Fixes #3073.

R=golang-dev, dsymonds, rsc
CC=golang-dev
https://golang.org/cl/5685049

My theory is that the call to f() allocates, which triggers
a garbage collection, which itself may do some allocation,
which is being counted.  Running a garbage collection
before starting the test should avoid this problem.

Fixes #2894 (I hope).

R=golang-dev, bradfitz, nigeltao
CC=golang-dev
https://golang.org/cl/5685046

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5683046

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/5683045