Fixes #6084

R=golang-dev, rsc, dave
CC=golang-dev
https://golang.org/cl/13523044

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13592043

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13587043

cmd/cc: bv.c imports libc.h twice

When using the Plan 9 compiler, the invocation

        #include <../ld/textflag.h>

works for the toolchain, but not for the MACH library.

Module cmd/cc/bv.c includes libc.h and "cc.h", which in
turn also includes libc.h.  In the Plan 9 context, this
causes a number of duplicate definitions.

R=golang-dev, rsc, r
CC=golang-dev
https://golang.org/cl/13303047

It's not needed to analyze coverage data.
Fixes #6120

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/13343050

These tests were suggested in golang.org/issue/6080.
They were fixed as part of the new nil pointer checks
that I added a few weeks ago.

Recording the tests as part of marking the issue closed.

Fixes #6080.

R=golang-dev, r, bradfitz
CC=golang-dev
https://golang.org/cl/13255049

Flushing after every token negates the point of buffering. A different approach is required.

««« original CL description
encoding/xml: flush buffer after encoding token

R=rsc, bradfitz, adg
CC=golang-dev
https://golang.org/cl/13004046

»»»

R=golang-dev, adg, rsc
CC=golang-dev
https://golang.org/cl/13515043

This should have been part of revision 16731:cdedb129e020, but
I missed it.  This fixes printing local variables when doing
an external link.

No test because we aren't doing any debug info testing yet.

Fixes #5719.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13464046

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13171046

DeepEqual caches addresses of compared values
each time it visits addressable values. This is
more expensive than actually comparing them in
the common case of large slices of bytes or integers.

Also add a fast path for slices with identical
underlying array.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13000044

Fixes #5240.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13546044

Also, report allocations in benchmark.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13410044

The underlying parse tree is visible in text/template, so it should be visible here.
Done by copying the underlying *parse.Tree up to the top level of the struct, and then making sure it's kept up to date.
Fixes #6318.

R=mikesamuel
CC=golang-dev
https://golang.org/cl/13479044

Enable cgo for dragonfly/386 and dragonfly/amd64.

R=golang-dev, jsing, iant, bradfitz
CC=golang-dev
https://golang.org/cl/13247046

Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/13336045

Fixes #6319.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13539043

Also remove incorrect statement that cgo does not support
gccgo.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13511043

Fixes #5272.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13498046

Based on an old suggestion by rsc, it compares the second
and following arguments to the first.

Unfortunately the code cannot be as pretty as rsc's original
because it doesn't require identical types.

R=golang-dev, dsymonds, adg
CC=golang-dev
https://golang.org/cl/13509046

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13261049

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13335050

We were reading 1024 bytes but only using 512.

Fixes #6311

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/13289047

Update #3610
Update #5267
Update #5707

R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/13465043

Use cnew/cnewarray instead of mallocgc.

R=golang-dev, dvyukov
CC=golang-dev
https://golang.org/cl/13396045

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/13328045

Add runtime and syscall support for dragonfly/386.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/13237051

Add generated z* files for dragonfly/386.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/13303046

Remove all hashtable-specific GC code.

Fixes bug 6119.

R=cshapiro, dvyukov, khr
CC=golang-dev
https://golang.org/cl/13078044

R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/13225043

Also flattens import declaration.

R=golang-dev, alex.brainman
CC=golang-dev
https://golang.org/cl/13373046

This CL makes resolveInternetAddr return a list of addresses that
contain a pair of different address family IP addresses if possible,
but doesn't contain any API behavioral changes yet. A simple IP
address selection mechanism for Resolve{TCP,UDP,IP}Addr and Dial API
still prefers IPv4.

This is in preparation for TCP connection setup with fast failover on
dual IP stack node as described in RFC 6555.

Update #3610
Update #5267

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13374043

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13316044

compress/flate is https://golang.org/cl/12953048
compress/zlib is https://golang.org/cl/13171046

Update #6138

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/13435043

Update #4805

Add the ability to set an open connection limit.
Fixed case where the Conn finalCloser was being called with db.mu locked.
Added separate benchmarks for each path for Exec and Query.
Replaced slice based idle pool with list based idle pool.

R=bradfitz
CC=golang-dev
https://golang.org/cl/10726044

This change allows people who want to parse or set odd X.509 extensions
to do so without having to add support for them all to the package.

I tried to make it so that only a single member: Extensions would be
needed. However, that would mean detecting when the caller had altered
the contents of it so that parsing and marshaling a certificate
wouldn't ignore all changes to the other members. This ended up being
messy, thus the current design where there are two members: one for
reading and another for writing.

As crypto/x509 adds support for more extensions in the future, the raw
extensions will still be in Extensions for older code that expects it
there. Also, future extensions will be overridden by any raw extensions
added to ExtraExtensions by code that was written before support was
added.

R=golang-dev, r
CC=golang-dev, jpsugar
https://golang.org/cl/12056043

Also introduce BGET2/4, BPUT2/4 as they are widely used.
Slightly improve BGETC/BPUTC implementation.
This gives ~5% CPU time improvement on go install -a -p1 std.
Before:
real		user		sys
0m23.561s	0m16.625s	0m5.848s
0m23.766s	0m16.624s	0m5.846s
0m23.742s	0m16.621s	0m5.868s
after:
0m22.999s	0m15.841s	0m5.889s
0m22.845s	0m15.808s	0m5.850s
0m22.889s	0m15.832s	0m5.848s

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/12745047

include the new image/color/palette package.

R=r
CC=golang-dev
https://golang.org/cl/13314044

image/color package into their own package. They require some non-
trivial init-time code (interface conversions, currently 40KiB of text)
that would otherwise burden any Go program that imported image/color.

R=r
CC=golang-dev
https://golang.org/cl/13256046

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13324046

This CL adds a new type addrList that will carry a short list of IP
addresses to dial helper functions in the upcoming CLs.

This is in preparation for TCP connection setup with fast failover on
dual IP stack node as described in RFC 6555.

Update #3610
Update #5267

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13241046