The new reflection API makes it an error to call value.Set(x)
if x is invalid. Guard for it.

Added corresponding test case.

Fixes #1696.

R=rsc, r
CC=golang-dev
https://golang.org/cl/4398047

Ubuntu and/or GNOME have some bug that likes
to set the "http_proxy" environment variable
and forgets to unset it.  This is annoying
to debug.  Be clear in the error message that
a proxy was in use.

R=rsc
CC=golang-dev
https://golang.org/cl/4409045

R=rsc
CC=golang-dev
https://golang.org/cl/4406048

. Missing declaration of runtime.brk_();
. Argument v in runtime.SysReserve() is not used;
  (I'd prefer a Plan 9-type solution...)

R=golang-dev, r, r2
CC=golang-dev
https://golang.org/cl/4368076

R=r
CC=golang-dev
https://golang.org/cl/4400047

We already had support on the client side. I also changed the name of
the flag in the ServerHello structure to match the name of the same
flag in the ClientHello (ocspStapling).

R=bradfitzgo
CC=golang-dev
https://golang.org/cl/4408044

This fixes our http behavior (even if Handlers forget to
consume a request body, we do it for them before we send
their response header), fixes the racy TestServerExpect,
and adds TestServerConsumesRequestBody.

With GOMAXPROCS>1, the http tests now seem race-free.

R=rsc
CC=golang-dev
https://golang.org/cl/4419042

R=rsc
CC=golang-dev
https://golang.org/cl/4414044

R=r, r2
CC=golang-dev
https://golang.org/cl/4370049

Fixes #1698.
Fixes #1699.

R=ken2
CC=golang-dev
https://golang.org/cl/4419041

R=bradfitzwork
CC=golang-dev
https://golang.org/cl/4397043

Fixes #1697.

R=ken2
CC=golang-dev
https://golang.org/cl/4395045

R=rsc
CC=golang-dev
https://golang.org/cl/4418043

R=rsc
CC=golang-dev
https://golang.org/cl/4416042

fixes build with GCC4.6

R=adg
CC=golang-dev
https://golang.org/cl/4396048

R=dsymonds
CC=golang-dev
https://golang.org/cl/4400044

R=dsymonds
CC=golang-dev
https://golang.org/cl/4396047

The list elements are already being allocated out of a
single memory buffer.  We can drop the Link* pointer
following and the memory it requires, replacing it with
index operations.

The change also keeps a channel from containing a pointer
back into its own allocation block, which would create a
cycle.  Blocks involved in cycles are not guaranteed to be
finalized properly, and channels depend on finalizers to
free OS-level locks on some systems.  The self-reference
was keeping channels from being garbage collected.

runtime-gdb.py will need to be updated in order to dump
the content of buffered channels with the new data structure.

Fixes #1676.

R=ken2, r
CC=golang-dev
https://golang.org/cl/4411045

R=golang-dev, niemeyer, r
CC=golang-dev
https://golang.org/cl/4372052

Fixes #1685.

R=ken2
CC=golang-dev
https://golang.org/cl/4414042

R=rog, adg, rsc
CC=golang-dev
https://golang.org/cl/4388048

Fixes #1689.

R=rsc
CC=golang-dev
https://golang.org/cl/4404043

Update goyacc, cgo to be more canonical in their naming and silence the new warnings.

R=rsc, gri
CC=golang-dev
https://golang.org/cl/4417042

R=r, nigeltao_gnome
CC=golang-dev
https://golang.org/cl/4404041

R=r, bradfitzwork
CC=golang-dev
https://golang.org/cl/4406044

Newly enabled compiler errors need workaround.

R=rsc
CC=golang-dev
https://golang.org/cl/4397047

R=rsc
CC=golang-dev
https://golang.org/cl/4403045

This mostly adds Expect 100-continue tests (from
the perspective of server correctness) that were
missing before.

It also fixes a few missing cases that will
probably never come up in practice, but it's nice
to have handled correctly.

Proper 100-continue client support remains a TODO.

R=rsc, bradfitzwork
CC=golang-dev
https://golang.org/cl/4399044

- replaced existing testdata/test.sh with new gofmt_test
- added initial test case for rewrite tests

TODO: Need to add more tests.

R=rsc
CC=golang-dev
https://golang.org/cl/4368063

R=rsc
CC=golang-dev
https://golang.org/cl/4397046

This CL is only cut-and-paste, moving code around.
Moving it in a separate CL should simplify the diffs in later CLs.

There are three patterns here.

1. A function like
        func (v Value) M() (...) {
                return v.panicIfNot(K).(*kValue).M()
        }
becomes
        func (v Value) M() (...) {
                vv := v.panicIfNot(K).(*kValue)

                // body of (*kValue).M, s/v./vv./g
        }

2. A function like
        func (v Value) M() (...) {
                return v.panicIfNots(kList).(mer).M()
        }
becomes
        func (v Value) M() (...) {
                switch vv := v.panicIfNots(kList).(type) {
                case *k1Value:
                        // body of (*k1Value).M, s/v./vv./g
                case *k2Value:
                        // body of (*k2Value).M, s/v./vv./g
                ...
                }
                panic("not reached")
        }

3. The rewrite of Value.Set follows 2, but each case
is built from the bodies of (*kValue).SetValue and (*kValue).Set.
        func (v *kValue) SetValue(x Value) {
                v.Set(x.panicIfNot(K).(*kValue)
        }
        func (v *kValue) Set(x *kValue) {
                ... body
        }
becomes, in the switch from 2,
                case *kValue:
                        xx := x.panicIfNot(K).(*kValue)
                        ... body, s/v./vv./g; s/x./xx./g

R=r
CC=golang-dev
https://golang.org/cl/4398044

R=rsc, gri
CC=golang-dev
https://golang.org/cl/4411044

TBR=r
CC=golang-dev
https://golang.org/cl/4396045

This CL changes the behavior of 'make install' and 'make test'
in the src/cmd directory and the src/pkg directory to have
each recursive make clean up after itself immediately.

It does the same in test/run, removing $F.$A and $A.out
(the common byproducts) between runs.

On machines with slow disks and aggressive kernel caching,
cleaning up immediately can mean that the intermediate
objects never get written to disk.

This change eliminates almost all the disk waiting during
all.bash on my laptop (a Thinkpad X201s with an SSD running Linux).

147.50u 19.95s 277.34r	before
148.53u 21.64s 179.59r	after

R=golang-dev, r, iant2
CC=golang-dev
https://golang.org/cl/4413042

Better to fix the warnings that we find.

R=iant
CC=golang-dev
https://golang.org/cl/4406042

R=golang-dev, r, iant2
CC=golang-dev
https://golang.org/cl/4408043

It matches encoding/line exactly and the tests are copied from there.
If we land this, then encoding/line will get marked as deprecated then
deleted in time.

R=rsc, rog, peterGo
CC=golang-dev
https://golang.org/cl/4389046

R=r, mkrautz, r2, rsc
CC=golang-dev
https://golang.org/cl/4415041

With the (partial) resolution of identifiers done
by the go/parser, ast.Objects point may introduce
cycles in the AST. Don't follow *ast.Objects, and
replace them with nil instead (they are likely
incorrect after a rewrite anyway).

- minor manual cleanups after reflect change automatic rewrite
- includes fix by rsc related to reflect change

Fixes #1667.

R=rsc
CC=golang-dev
https://golang.org/cl/4387044

- fixed a couple of comments
- cleanups after reflect change

R=rsc
CC=golang-dev
https://golang.org/cl/4389041