This makes it possible to say -I c:/foo on Windows.

Fixes #2683 comment #3.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5540043

The domain returned by appengine.DefaultVersionHostname
isn't the one we want.
This change has been uploaded to build.golang.org

R=golang-dev, rsc, r
CC=golang-dev
https://golang.org/cl/5539043

This will let programs invoking ld prepare for it.
See issue 2676.

R=iant
CC=golang-dev
https://golang.org/cl/5535044

In a test that does

        func TestFoo(t *testing.T) {
                defer cleanup()
                t.Fatal("oops")
        }

it can be important that cleanup run as the test fails.
The old code did this in Fatal:

        t.signal <- t
        runtime.Goexit()

The runtime.Goexit would run the deferred cleanup
but the send on t.signal would cause the main test loop
to move on and possibly even exit the program before
the runtime.Goexit got a chance to run.

This CL changes tRunner (the top stack frame of a test
goroutine) to send on t.signal as part of a function
deferred by the top stack frame.  This delays the send
on t.signal until after runtime.Goexit has run functions
deferred by the test itself.

For the above TestFoo, this CL guarantees that cleanup
will run before the test binary exits.

This is particularly important when cleanup is doing
externally visible work, like removing temporary files
or unmounting file systems.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5532078

Especially affects tests, but not test-specific.
The linker was only being told where to find the
direct dependencies of package main.  Sometimes that
was sufficient to find the rest; sometimes not.

Fixes #2657.
Fixes #2666.
Fixes #2680.

R=golang-dev, adg, rogpeppe
CC=golang-dev
https://golang.org/cl/5528079

R=golang-dev, robert.hencke, r
CC=golang-dev
https://golang.org/cl/5538050

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5529080

This breakage is mainly due to API changes in pkg.
(e.g., package utf8 moved to unicode/utf8;
       remove of strconv.Atof64;
       change character type from int to rune.)
Also correct the usage comment.

This fixes issue 2646.
PS: I don't change the goyacc.go, because I think token type
    should not be force to rune.

R=golang-dev, adg, rogpeppe, r, r
CC=golang-dev
https://golang.org/cl/5502093

The escape analysis code does not make a distinction between
scalar and pointers fields in structs. Non-pointer fields
that escape should not make the whole struct escape.

R=lvd, rsc
CC=golang-dev, remy
https://golang.org/cl/5489128

Fixes #2621.

R=rsc, rsc
CC=golang-dev
https://golang.org/cl/5498104

It's hard enough to get right once.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5533073

R=lvd
CC=golang-dev
https://golang.org/cl/5533078

Tighter octal parsing broke some tests and were disabled in
https://golang.org/cl/5530051

Those tests were broken.  The CSS decoder was supposed to see CSS
hex escape sequences of the form '\' <hex>+, but those escape
sequences were instead being consumed by the template parser.

This change properly escapes those escape sequences, and uses
proper escaping for NULs.

R=golang-dev, rsc, nigeltao
CC=golang-dev
https://golang.org/cl/5529073

R=lvd
CC=golang-dev
https://golang.org/cl/5532077

- Changed the Scan API semantics slightly:
The token literal string is only returned
if the token is a literal, comment, semicolon,
or illegal character. In all other cases, the
token literal value is determined by the token
value.

Clients that care about the token literal value
when not present can always use the following
piece of code:

pos, tok, lit := scanner.Scan()
if lit == "" {
   lit = tok.String()
}

- Changed token.Lookup API to use a string instead
of a []byte argument.

- Both these changes were long-standing TODOs.

- Added BenchmarkScan.

This change permits a faster implementation of Scan
with much fewer string creations:

benchmark                old ns/op    new ns/op    delta
scanner.BenchmarkScan        74404        61457  -17.40%

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5532076

R=golang-dev, r, kevlar, rsc
CC=golang-dev
https://golang.org/cl/5534045

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5534074

Fixes #2682.

R=lvd
CC=golang-dev
https://golang.org/cl/5538043

1 minute is not enough for the slower builders.

R=adg
CC=golang-dev
https://golang.org/cl/5533068

Fixes #2678

R=rsc
CC=golang-dev
https://golang.org/cl/5529066

R=rsc
CC=golang-dev
https://golang.org/cl/5533070

This is a relic from the times when we switched
to automatic semicolon insertion. It's still use-
ful to have a non-exported switch for testing.

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/5528077

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5529067

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5535048

R=golang-dev
CC=golang-dev
https://golang.org/cl/5530078

1) Include Szabolcs Nagy's patch which adds serialisation for more
   signature subpackets.
2) Include Szabolcs Nagy's patch which adds functions for making DSA
   keys.
3) Make the random io.Reader an argument to the low-level signature
   functions rather than having them use crypto/rand.
4) Rename crypto/openpgp/error to crypto/openpgp/errors so that it
   doesn't clash with the new error type.

R=bradfitz, r
CC=golang-dev
https://golang.org/cl/5528044

Will have to do better but this is enough to
stop the builders from hanging, I hope.

R=golang-dev, dsymonds, adg
CC=golang-dev
https://golang.org/cl/5533066

pkg/runtime/sys_darwin_amd64.s: fixes syscall select nr
pkg/runtime/sys_linux_arm.s: uses newselect instead of the now unimplemented
        (old) select, also fixes the wrong div/mod statements in runtime.usleep.
Fixes #2633

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5504096

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5530076

TBR=lvd
CC=golang-dev
https://golang.org/cl/5534070

R=adg, dsymonds
CC=golang-dev
https://golang.org/cl/5532066

R=lvd, r
CC=golang-dev
https://golang.org/cl/5531058

R=golang-dev, adg, rsc
CC=golang-dev
https://golang.org/cl/5533065

Suggested by Sanjay Ghemawat.  5-20% faster depending
on the benchmark.

Add tree2 garbage benchmark.
Update other garbage benchmarks to build again.

R=golang-dev, r, adg
CC=golang-dev
https://golang.org/cl/5530074

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5528070

Makes it possible to easily detect if an Object was predeclared
(as opposed to unresolved).

R=rsc
CC=golang-dev
https://golang.org/cl/5530072

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5533063

What package image currently provides is a larger image consisting
of many copies of a smaller image.

More generally, a tiled image could be a quilt consisting of different
smaller images (like Google Maps), or a technique to view a portion of
enormous images without requiring the whole thing in memory.

This richer construct might not ever belong in the standard library (and
is definitely out of scope for Go 1), but I would like the option for
image.Tiled to be its name.

R=r, rsc
CC=golang-dev
https://golang.org/cl/5530062

Also reorganize socket options stuff but there are no API behavioral
changes.

R=rsc, fullung
CC=golang-dev
https://golang.org/cl/5494067

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5534066