R=r, r
CC=golang-dev
https://golang.org/cl/5759045

go/build: add Context.Compiler

Fixes #3157.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5756047

Not used yet for simpler merge.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5756048

Bit of a band-aid fix.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5757045

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5759044

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5754048

R=golang-dev, bradfitz, r, rsc
CC=golang-dev
https://golang.org/cl/5758044

This exercises the Import function but more importantly
gives us a place to write down the policy for dependencies
within the Go tree.  It also forces us to look at the dependencies,
which may lead to adjustments.

Surprises:
 - go/doc imports text/template, for HTMLEscape (could fix)
 - it is impossible to use math/big without fmt (unfixable)
 - it is impossible to use crypto/rand without math/big (unfixable)

R=golang-dev, bradfitz, gri, r
CC=golang-dev
https://golang.org/cl/5732062

In the test, verify the copied constants are correct.
Also put the test into package utf16 rather than utf16_test;
the old location was probably due creating the test from
utf8, but the separation is not needed here.

R=golang-dev, bradfitz, rsc, rsc, r
CC=golang-dev
https://golang.org/cl/5752047

These appear to have been left out of the CL I submitted earlier.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5759043

Also, tweak run.go to use no more than 2x the
number of CPUs, and only one on ARM.

53.85u 13.33s 53.69r 	 ./run
50.68u 12.13s 18.85r 	 go run run.go

Fixes #2833.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5754047

R=iant, r, gri
CC=golang-dev
https://golang.org/cl/5720073

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/5752048

R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/5753047

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5755045

* Splits into three server tests.
  - TestStreamConnServer for tcp, tcp4, tcp6 and unix networks
  - TestSeqpacketConnServer for unixpacket networks
  - TestDatagramPacketConnServer for udp, udp4, udp6 and unixgram networks
* Adds both PacketConn and Conn test clients to datagram packet conn tests.
* Fixes wildcard listen test cases on dual IP stack platform.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5701066

As runtime.UintType is no longer defined, the gccgo error
messages have changed.

bug388.go:12:10: error: reference to undefined identifier ‘runtime.UintType’
bug388.go:12:10: error: invalid named/anonymous mix
bug388.go:13:21: error: reference to undefined identifier ‘runtime.UintType’
bug388.go:17:10: error: reference to undefined identifier ‘runtime.UintType’
bug388.go:18:18: error: reference to undefined identifier ‘runtime.UintType’
bug388.go:22:9: error: non-name on left side of ‘:=’
bug388.go:27:10: error: expected type
bug388.go:32:9: error: expected type
bug388.go:23:14: error: reference to field ‘i’ in object which has no fields or methods

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5755044

The dependency was there only to pull in two constants.
Now we define them locally and verify equality in the test.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5754046

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5757043

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/5756043

go.xclangspec is identical to the one in misc/xcode/3/, except for the heading.

Partial workaround for issue 2401.

R=gri
CC=golang-dev
https://golang.org/cl/5732051

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5754044

R=bradfitz
CC=golang-dev
https://golang.org/cl/5754043

R=golang-dev, bsiegert, jdpoirier
CC=golang-dev
https://golang.org/cl/5727059

Fixes #3182.

R=golang-dev, dvyukov, rsc
CC=golang-dev, remy
https://golang.org/cl/5732057

Once dnsMsg stops using reflect, we lose even more
indirect dependencies.

R=rsc
CC=golang-dev
https://golang.org/cl/5751043

GOROOT_FINAL is a build parameter that means "eventually
the Go tree will be installed here".  Make the file name information
match that eventual location.

Fixes #3180.

R=ken, ken
CC=golang-dev
https://golang.org/cl/5742043

This happens with GOROOT_FINAL=/somewhere/else

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5727069

If I click on links which should send you to source code (e.g. type, function, etc),
the link is to //src/... (instead of /src/...).
This causes a DNS resolution failure on the browser.

Quick fix is to remove the leading / from package.html
(since godoc.go src links automatically add a leading / as necessary).

Fixes #3193.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5730059

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5746043

Also add a TODO for the broken *dnsMsg String method.

R=golang-dev, rsc, borman
CC=golang-dev
https://golang.org/cl/5720075

in emacs go mode.  Thanks Alex Shinn for the patch.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5728063

Also add some more MAC tests.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5728065

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5730061

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5727068

CL 3075041 says ARM is not little-endian, but my test suggests otherwise.
My test program is:

    package main
    import ("fmt"; "syscall"; "os")
    func main() {
       err := syscall.Fallocate(1, 1/*FALLOC_FL_KEEP_SIZE*/, 0, int64(40960));
       fmt.Fprintln(os.Stderr, err)
    }

Without this CL, ./test > testfile will show: file too large; and strace shows:
    fallocate(1, 01, 0, 175921860444160)    = -1 EFBIG (File too large)
With this CL, ./test > testfile will show: <nil>; and strace shows:
    fallocate(1, 01, 0, 40960)              = 0

Quoting rsc:
"[It turns out that] ARM syscall ABI requires 64-bit arguments to use an
(even, odd) register pair, not an (odd, even) pair. Switching to "big-endian"
worked because it ended up using the high 32-bits (always zero in the tests
we had) as the padding word, because the 64-bit argument was the last one,
and because we fill in zeros for the rest of the system call arguments, up to
six. So it happened to work."

I updated mksyscall_linux.pl to accommodate the register pair ABI requirement,
and removed all hand-tweaked syscall routines in favor of the auto-generated
ones. These including: Ftruncate, Truncate, Pread and Pwrite.

Some recent Linux/ARM distributions do not bundle kernel asm headers,
so instead we always get latest asm/unistd.h from git.kernel.org (just like
what we do for FreeBSD).

R=ken, r, rsc, r, dave, iant
CC=golang-dev
https://golang.org/cl/5726051

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5726062

Fixes #3196.

R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/5725044

R=lvd, gri
CC=golang-dev
https://golang.org/cl/5731061

R=ken2
CC=golang-dev
https://golang.org/cl/5728064