api: refresh next.txt

R=golang-dev, bradfitz
CC=golang-dev
https://codereview.appspot.com/7317049
build: clang support

This works with at least one version of clang
that existed at one moment in time.
No guarantees about clangs past or future.

To try:
        CC=clang all.bash

It does not work with the Xcode clang,
because that clang fails at printing a useful answer
to:
        clang -print-libgcc-file-name
The clang that works prints a full path name for
that command, not just "libgcc.a".

Fixes issue 4713.

R=iant, minux.ma
CC=golang-dev
https://codereview.appspot.com/7323068
os: point users of ProcessState.SysUsage to getrusage(2)

R=golang-dev, bradfitz
CC=golang-dev
https://codereview.appspot.com/7352044
undo CL 7310096 / 59da6744d66d

broke windows build

««« original CL description
runtime: ensure forward progress of runtime.Gosched() for locked goroutines
The removed code leads to the situation when M executes the same locked G again and again.
Fixes issue 4820.

R=golang-dev, rsc
CC=golang-dev
https://codereview.appspot.com/7310096
»»»

TBR=dvyukov
CC=golang-dev
https://codereview.appspot.com/7343050
runtime: fix unused variable warning

R=rsc, dvyukov
CC=golang-dev
https://codereview.appspot.com/7312103
net: add IPConn through Conn test

Also refactors mock ICMP stuff.

R=dave, rsc
CC=golang-dev
https://codereview.appspot.com/7325043
runtime: fix build on openbsd

R=golang-dev, jsing
CC=golang-dev
https://codereview.appspot.com/7312104

Committer: Joel Sing <jsing@google.com>