Fixes #2792.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5590045

    If p->to.sym->text is non-nil, then no need to search for sym->value.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5601046

        5l -v is for benchmarking various parts of the loader, but this code in
        obj.c will clutter the output. I only comment them out, because this is
        on par with 8l/6l.

R=golang-dev
CC=golang-dev
https://golang.org/cl/5600046

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5552054

A go build currently generates around 400MB of test output prior to
cleaning up. With this change we use a maximum of ~15MB.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5588044

R=rsc, r
CC=golang-dev
https://golang.org/cl/5593046

R=golang-dev, lvd
CC=golang-dev
https://golang.org/cl/5601058

Ensure that file descriptors have not already been leaked into our
environment - close any that are open at the start of the
TestExtraFiles test.

Also use the appropriate command for listing open files.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5574062

gccgo currently fails this test:

fixedbugs/bug402.go:12:9: error: floating point constant truncated to integer
fixedbugs/bug402.go:13:8: error: floating point constant truncated to integer

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5600050

This patch adds a hash seed to the Hmap struct.  Each seed is
initialized by runtime.fastrand1().  This is the first step of a
solution to issue 2630.  Fastrand1 still needs to be updated to provide
us with actually random bits.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5599046

R=golang-dev
CC=golang-dev
https://golang.org/cl/5600055

The new cross-compiling bin target was breaking
everything but the system where buildscript.sh ran.

TBR=golang-dev
CC=golang-dev
https://golang.org/cl/5598055

TBR=golang-dev
CC=golang-dev
https://golang.org/cl/5600054

Consequently, remove many package Makefiles,
and shorten the few that remain.

gomake becomes 'go tool make'.

Turn off test phases of run.bash that do not work,
flagged with $BROKEN.  Future CLs will restore these,
but this seemed like a big enough CL already.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5601057

Add 'go clean'.
Make 'go build' write to pkgname, not a.out.
Make 'go test -c' write to pkgname.test, not test.out.
Make 'go install' write alternate binaries to .../bin/goos_goarch/.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5600048

Fixes #2436.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5576075

A current theory is that this test is too fast for the
time resolution on the VMs where our builders run.

R=rsc
CC=golang-dev
https://golang.org/cl/5581056

The builder is Debian, so maybe running dash,
the shell that time forgot.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5600053

We weren't properly deleting the various header
files (that were temporarily renamed) if a $CC
for the current $GOARCH didn't exist.  And since
the compiler checks the current directory for
headers before any -I arguments, this had the
unfortunate side effect of including the last
generated headers instead of the correct ones.

R=r, rsc
CC=golang-dev
https://golang.org/cl/5581055

They have moved to the code.google.com/p/go.image subrepo.

R=rsc
CC=golang-dev
https://golang.org/cl/5552052

R=r
CC=golang-dev
https://golang.org/cl/5598052

R=rsc, r
CC=golang-dev
https://golang.org/cl/5581053

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5599051

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5595048

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5598051

attempt to fix freebsd build
TBR=rsc

R=rsc
CC=golang-dev
https://golang.org/cl/5576077

Fixes #2803.

R=r
CC=golang-dev
https://golang.org/cl/5601053

Also delete gotest, since it's messy to fix and slated for deletion anyway.
A couple of things outside src can't be tested any more. "go test" will be
fixed and these tests will be re-enabled. They're noisy for now.

Fixes #284.

R=rsc
CC=golang-dev
https://golang.org/cl/5598049

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5569092

Fixes #2786.

R=r, bradfitz
CC=golang-dev
https://golang.org/cl/5581050

If set, all methods are shown, not just those
of non-exported anonynous fields.

This change will only become functional once
CL 5576057 is submitted.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5599048

Fix from Russ. Tested that multiple builds in a row
work again.

R=rsc, rsc
CC=golang-dev
https://golang.org/cl/5599047

Makes for prettier docs.

R=golang-dev, dsymonds, r, rsc
CC=golang-dev
https://golang.org/cl/5576056

Benchmarks look the same.

R=golang-dev, dsymonds, rsc
CC=golang-dev
https://golang.org/cl/5572080

This fixes a regression that was made when adding
support for building with gccgo (in d6a14e6fac0c).

External commands (those not from the Go tree) were
being installed to the package directory instead of
the binary directory.

R=golang-dev, rsc, adg, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/5564072

R=iant, r
CC=golang-dev
https://golang.org/cl/5576071

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5581047

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5569090

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5598045

I assume this was a too aggressive search-and-replace.

R=imkrasin
CC=golang-dev
https://golang.org/cl/5580047