Fixes #4893.
Actually it's fixed by cl/7314062 (improved scheduler),
just submitting the test.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7422054

In preparation for integrated network poller
(https://golang.org/cl/7326051),
this is required to handle deadlines.

R=golang-dev, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/7446047

R=rsc
CC=golang-dev
https://golang.org/cl/7301062

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7431054

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7416050

Implementation closely based on Russ' CL 7440047.

Future work: The error messages could be better
(e.g., instead of "missing return" it might say
"missing return (no default in switch)", etc.).

R=adonovan, rsc
CC=golang-dev
https://golang.org/cl/7437049

Fixes #65.

R=ken2
CC=golang-dev
https://golang.org/cl/7441049

The only functional change is the new section
on terminating statements.

There is a minor syntax rewrite (not change)
of function declarations to make it easier to
refer to the notion of a function from all places
where it is used (function decls, method decls,
and function literals).

Includes some minor fixes/additions of missing links.

Based closely on Russ' proposal.

Fixes #65.

R=rsc, r, iant, ken, bradfitz
CC=golang-dev
https://golang.org/cl/7415050

Fixes #4976.

R=r
CC=golang-dev
https://golang.org/cl/7421050

R=golang-dev, adonovan, bradfitz, cw, patrick.allen.higgins, sameer, ugorji
CC=golang-dev
https://golang.org/cl/7373051

to reduce compile time memory/stack usage.
Update #4970
$ go test -c ../test/bench/go1
before:
0.36user 0.07system 0:00.44elapsed 100%CPU
(0avgtext+0avgdata 540720maxresident)k
0inputs+19840outputs (0major+56451minor)pagefaults 0swaps
after:
0.33user 0.05system 0:00.39elapsed 100%CPU
(0avgtext+0avgdata 289936maxresident)k
0inputs+19864outputs (0major+29615minor)pagefaults 0swaps

And stack usage is reduced to below 1MiB.

R=golang-dev, r, dave
CC=golang-dev
https://golang.org/cl/7436050

Fixes #4969

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7456049

Using -import_runtime_cgo would have worked great except
that it doesn't get passed to the second invocation of cgo,
and that's the one that writes the relevant file.

Fixes ARM build on systems with a different dynamic linker
than the one 5l assumes (like Gentoo).

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7432048

Use a 17 MB payload instead of a 1 MB payload, since
OS X can apparently buffer up to 16 MB in its pipes.

Fixes #4958 maybe

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7453049

Fixes #4941.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7415051

If the constant CollectStats is non-zero and GOGCTRACE=1
the garbage collector will print basic statistics about executed
GC instructions.

R=golang-dev, dvyukov
CC=golang-dev, rsc
https://golang.org/cl/7413049

Fixes #4882.
Fixes #4936.
Fixes #4937.

R=golang-dev, dave, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/7432044

R=golang-dev, dvyukov
CC=golang-dev
https://golang.org/cl/7435053

Fixes #4932.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/7437043

R=golang-dev, remyoudompheng, bradfitz
CC=golang-dev
https://golang.org/cl/7419049

Don't check out the repository if we're just going to fail everything.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7453048

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7450052

The old code would decode the palette only for 8-bit
images during a DecodeConfig.
This CL keeps the behavior for 8-bit images and sets
up the decoded palette also for 1, 2 and 4-bit images.

Fixes #4279.

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/7421048

Fixes the App Engine version of godoc. The other fix is to duplicate
this code inside appinit.go. I think initHandlers is the right place
to put the strings.Split call, as the notesToShow var is used by
docServer, which is what initHandlers sets up.

R=dsymonds
CC=golang-dev
https://golang.org/cl/7434044

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7423050

Fixes build on Plan 9 and Windows.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7454049

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7429049

Also replaces testing.Errof with testing.Fatalf, make use of ICMP mock.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7308058

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7433044

1. when executing a unsupported VFP instruction, the NetBSD kernel somehow
doesn't report SIGILL, and instead just spin and spin, we add a alarm(2)
to detect this case (albeit this is a kernel bug).
2. NetBSD/ARM's VFP11 support is not complete, so temporarily disable it.
3. The default gcc shipped with NetBSD-current mis-optimizes our code
at -O2, so lower the optimization level to -O1 on NetBSD/ARM.

R=dave, rsc
CC=golang-dev
https://golang.org/cl/7286044

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7422055

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7420051

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7445050

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7450050

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7419048

They are moving to code.google.com/p/go.exp.
See also https://golang.org/cl/7463043

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7456047

Fixes #4826.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7434046

Fixes #4904.
The problem was that when the test runs the heap had grown to ~100MB,
so GC allows it to grow to 200MB, and so the test fails.
Moving the test to a separate process makes it much more isolated and stable.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7441046

Fixes #4952.

R=alex.brainman
CC=golang-dev
https://golang.org/cl/7445046

More robustness in case of incorrect programs.

Fixes #4962.

R=dsymonds
CC=golang-dev
https://golang.org/cl/7429047