- pprof is a perl script, so go command should invoke
  perl instead of trying to run pprof directly;
- pprof should use "go tool nm" unconditionally on windows,
  no one else can extract symbols from Go program;
- pprof should use "go tool nm" instead of "6nm".

Fixes #3879.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6445082

Before, pointers always appeared as 0x1234ABCD. This CL
keeps that as the default for %p and %v, but lets explicit
numeric verbs override the default.
Fixes #3936.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6441152

Only affects some tests and none seem likely to be problematic, but let's fix them.
Fixes #3971.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6463060

R=r, rsc, iant, ken, iant
CC=golang-dev
https://golang.org/cl/6450150

When manipulating the stack pointer use the UESP register instead
of the ESP register, since the UESP register is the one that gets
restored from the machine context. Fixes broken tests on netbsd/386.

R=golang-dev, minux.ma, r, bsiegert
CC=golang-dev
https://golang.org/cl/6465054

see issus 3358 for similar problem

R=golang-dev
CC=golang-dev, minux.ma
https://golang.org/cl/6464072

        I don't know why this relocation is used.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6464070

        I guess this is the problem as I can't reproduce the failure.

R=golang-dev, alex.brainman
CC=golang-dev
https://golang.org/cl/6465060

   This CL adds a step to the build procedure for cgo programs. It uses 'ld -r'
to combine all gcc compiled object file and generate a relocatable object file
for our ld. Additionally, this linking step will combine some static linking
gcc library into the relocatable object file, so that we can use libgcc,
libmingwex and libmingw32 without problem.

   Fixes #3261.
   Fixes #1741.
   Added a testcase for linking in libgcc.

TODO:
1. still need to fix the INDIRECT_SYMBOL_LOCAL problem on Darwin/386.
2. still need to enable the libgcc test on Linux/ARM, because 5l can't deal
with thumb libgcc.

Tested on Darwin/amd64, Darwin/386, FreeBSD/amd64, FreeBSD/386, Linux/amd64,
Linux/386, Linux/ARM, Windows/amd64, Windows/386

R=iant, rsc, bradfitz, coldredlemur
CC=golang-dev
https://golang.org/cl/5822049

R=golang-dev, minux.ma, iant
CC=golang-dev
https://golang.org/cl/6459091

R=golang-dev, dave, minux.ma, remyoudompheng
CC=golang-dev
https://golang.org/cl/6460093

Fixes #3465.

R=golang-dev, rsc, remyoudompheng, iant
CC=golang-dev
https://golang.org/cl/6448097

Now that the parser passes all tests in the test suite,
it is no longer necessary to keep track of which tests
pass and which don't. So remove the testlogs directory
and the code that uses it.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6453124

Wrote code that was the basis for
https://golang.org/cl/6454046/

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6450142

R=r
CC=golang-dev
https://golang.org/cl/6450136

This currently fails on NetBSD due to the cloned file descriptors
that result from opening /dev/urandom. Disable the additional checking
until this is investigated and properly fixed.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6443129

Disable the crash handler test on NetBSD until I can figure out why
it triggers failures in later tests.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6460090

Provide sockoptip for NetBSD, based on sockoptip for OpenBSD.

R=golang-dev, rsc, mikioh.mikioh, minux.ma
CC=golang-dev
https://golang.org/cl/6308053

Fixes #3896.

R=rsc, rogpeppe, r
CC=golang-dev
https://golang.org/cl/6457075

All of the remaining tests that had as status of PARSE rather than PASS had
good reasons for not passing the render-and-reparse step: the correct parse tree is
badly formed, so when it is rendered out as HTML, the result doesn't parse into the
same tree. So add them to the list of tests where that step is skipped.

Also, I discovered that it is possible to end up with HTML elements (not just text)
inside a raw text element through reparenting. So change the rendering routines to
handle that situation as sensibly as possible (which still isn't very sensible, but
this is HTML5).

R=nigeltao
CC=golang-dev
https://golang.org/cl/6446137

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/6446131

R=golang-dev, nigeltao, minux.ma
CC=golang-dev
https://golang.org/cl/6441138

Optimize some common cases.

benchmark            old ns/op    new ns/op    delta
BenchmarkScanFile       718907       667960   -7.09%

benchmark             old MB/s     new MB/s  speedup
BenchmarkScanFile        23.03        25.51    1.11x

R=r
CC=golang-dev
https://golang.org/cl/6454150

This package has moved to go.net.

R=golang-dev, minux.ma, r, dave
CC=golang-dev
https://golang.org/cl/6461056

When generating replacement elements for an <isindex> tag, the old
addSyntheticElement method was producing the wrong nesting. Replace
it with parseImpliedToken.

Pass the one remaining test in the test suite.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6453114

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6454145

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6460082

If a tag doesn't have a closing '>', it isn't considered a tag;
it is just ignored and EOF is returned instead.

Pass one additional test in the test suite.

Change tokenizer tests to match correct behavior.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6454131

Partial fix for issue 3943.

R=r
CC=golang-dev
https://golang.org/cl/6458115

Incorrect syntax for comment was erroneously accepted.
Fixes #3919.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6453105

        Fixes #3921.

R=iant
CC=golang-dev
https://golang.org/cl/6448132

In HTML content, having a self-closing tag is a parse error unless
the tag would be self-closing anyway (like <img>). The only place a
self-closing tag actually makes a difference is in XML-based foreign
content.

Pass 1 additional test.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6450109

Fixes #3922.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/6453094

It was caused by bytes.TrimSpace being able to return a nil
slice.

Fixes #3914.

R=golang-dev, r
CC=golang-dev, remy
https://golang.org/cl/6458091

Also simplified parsing of interface
types since they can only contain
methods (and no embedded interfaces)
in the export data.

R=rsc
CC=golang-dev
https://golang.org/cl/6446084

Fixes #3852.

R=r, rsc, iant, ken
CC=golang-dev
https://golang.org/cl/6441102

    Fixes #3350.

R=golang-dev, adg, r, fullung
CC=golang-dev
https://golang.org/cl/6445092

R=golang-dev, dave
CC=golang-dev, minux.ma
https://golang.org/cl/6461065

The keyword reprents an untyped nil and is useful for
passing nil values to methods and functions. The
nil will be promoted to the appropriate type when
used; if a type cannot be assigned, an error results.

R=rsc, dsymonds
CC=golang-dev
https://golang.org/cl/6459056

Although I don't use PAX enabled ARM kernels, PAX
does have support for ARM, so we're better off add
PT_PAX_FLAGS now in case people use PAX kernels.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6453092