[release-branch.go1.4] doc: copy contribute.html and install-source.html from master

This incorporates the various git-related updates that have
happened since the Go 1.4 release. Since Go 1.4.1 will be issued
from Git, it is appropriate to replace the Mercurial instructions
with Git instructions.

Change-Id: Idec041002c7f325c4eee6f25c50423b088b11468
Reviewed-on: https://go-review.googlesource.com/2788
Reviewed-by: Andrew Gerrand <adg@golang.org>

2 files changed, 53 insertions, 78 deletions

diff --git a/doc/contribute.html b/doc/contribute.html
index ba550d5281..63d477462c 100644
--- a/doc/contribute.html
+++ b/doc/contribute.html
@@ -6,19 +6,10 @@
 
 <p>
 This document explains how to contribute changes to the Go project.
-It assumes you have installed Go from source:
-<p>
-
-<pre>
-$ git clone https://go.googlesource.com/go
-$ cd go/src
-$ ./all.bash
-</pre>
-<!--
-TODO(adg): delete the above, restore the below after we have updated install-source.html
+It assumes you have followed the
 <a href="/doc/install/source">installation instructions</a> and
 have <a href="code.html">written and tested your code</a>.
--->
+</p>
 
 <p>
 (Note that the <code>gccgo</code> frontend lives elsewhere;
@@ -77,7 +68,7 @@ Changes to Go must be reviewed before they are submitted,
 no matter who makes the change.
 (In exceptional cases, such as fixing a build, the review can
 follow shortly after submitting.)
-A custom git command called <code>git-review</code>,
+A custom git command called <code>git-codereview</code>,
 discussed below, helps manage the code review process through a Google-hosted
 <a href="https://go-review.googlesource.com/">instance</a> of the code review
 system called <a href="https://code.google.com/p/gerrit/">Gerrit</a>.
@@ -132,53 +123,53 @@ and log in using the same Google Account you used above.
 That is all that is required.
 </p>
 
-<h3>Install the git-review command</h3>
+<h3>Install the git-codereview command</h3>
 
 <p>
-Now install the <code>git-review</code> command by running,
+Now install the <code>git-codereview</code> command by running,
 </p>
 
 <pre>
-go get -u golang.org/x/review/git-review
+go get -u golang.org/x/review/git-codereview
 </pre>
 
 <p>
-Make sure <code>git-review</code> is installed in your shell path, so that the
+Make sure <code>git-codereview</code> is installed in your shell path, so that the
 <code>git</code> command can find it. Check that
 </p>
 
 <pre>
-$ git review help
+$ git codereview help
 </pre>
- 
+
 <p>
 prints help text, not an error.
 </p>
 
 <p>
-Note to Git aficionados: The <code>git-review</code> command is not required to
+Note to Git aficionados: The <code>git-codereview</code> command is not required to
 upload and manage Gerrit code reviews. For those who prefer plain Git, the text
-below gives the Git equivalent of each git-review command. If you do use plain
-Git, note that you still need the commit hooks that the git-review command
+below gives the Git equivalent of each git-codereview command. If you do use plain
+Git, note that you still need the commit hooks that the git-codereview command
 configures; those hooks add a Gerrit <code>Change-Id</code> line to the commit
 message and check that all Go source files have been formatted with gofmt. Even
 if you intend to use plain Git for daily work, install the hooks in a new Git
-checkout by running <code>git-review</code> <code>hooks</code>).
+checkout by running <code>git-codereview</code> <code>hooks</code>.
 </p>
 
 <h3>Set up git aliases</h3>
 
 <p>
-The <code>git-review</code> command can be run directly from the shell
+The <code>git-codereview</code> command can be run directly from the shell
 by typing, for instance,
 </p>
 
 <pre>
-$ git review sync
+$ git codereview sync
 </pre>
 
 <p>
-but it is more convenient to set up aliases for <code>git-review</code>'s own
+but it is more convenient to set up aliases for <code>git-codereview</code>'s own
 subcommands, so that the above becomes,
 </p>
 
@@ -186,8 +177,8 @@ subcommands, so that the above becomes,
 $ git sync
 </pre>
 
-</p>
-The <code>git-review</code> subcommands have been chosen to be distinct from
+<p>
+The <code>git-codereview</code> subcommands have been chosen to be distinct from
 Git's own, so it's safe to do so.
 </p>
 
@@ -200,24 +191,25 @@ To install them, copy this text into your Git configuration file
 
 <pre>
 [alias]
-	change = review change
-	gofmt = review gofmt
-	mail = review mail
-	pending = review pending
-	sync = review sync
+	change = codereview change
+	gofmt = codereview gofmt
+	mail = codereview mail
+	pending = codereview pending
+	submit = codereview submit
+	sync = codereview sync
 </pre>
 
-<h3>Understanding the git-review command</h3>
+<h3>Understanding the git-codereview command</h3>
 
-<p>After installing the <code>git-review</code> command, you can run</p>
+<p>After installing the <code>git-codereview</code> command, you can run</p>
 
 <pre>
-$ git review help
+$ git codereview help
 </pre>
 
 <p>
 to learn more about its commands.
-You can also read the <a href="https://godoc.org/golang.org/x/review/git-review">command documentation</a>.
+You can also read the <a href="https://godoc.org/golang.org/x/review/git-codereview">command documentation</a>.
 </p>
 
 <h3>Switch to the master branch</h3>
@@ -367,7 +359,7 @@ Do not edit or delete it.
 <p>
 (In Git terms, <code>git</code> <code>change</code> with no branch name
 runs <code>git</code> <code>commit</code> <code>--amend</code>.)
-</p> 
+</p>
 
 <h3>Mail the change for review</h3>
 
@@ -469,7 +461,7 @@ $ git sync
 </pre>
 
 <p>
-(In git terms, git sync runs
+(In git terms, <code>git</code> <code>sync</code> runs
 <code>git</code> <code>pull</code> <code>-r</code>.)
 </p>
 
@@ -660,7 +652,7 @@ This rigmarole needs to be done only for your first submission.
 <p>Code that you contribute should use the standard copyright header:</p>
 
 <pre>
-// Copyright 2014 The Go Authors. All rights reserved.
+// Copyright 2015 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 </pre>
diff --git a/doc/install-source.html b/doc/install-source.html
index f53deb404c..15cb624df2 100644
--- a/doc/install-source.html
+++ b/doc/install-source.html
@@ -81,38 +81,21 @@ The full set of supported combinations is listed in the discussion of
 
 <p>
 The Go tool chain is written in C. To build it, you need a C compiler installed. 
-Please refer to the <a href="//golang.org/wiki/InstallFromSource#Install_C_tools">InstallFromSource</a>
+Please refer to the <a href="//golang.org/wiki/InstallFromSource#install-c-tools">InstallFromSource</a>
 page on the Go community Wiki for operating system specific instructions.
 </p>
 
-<h2 id="mercurial">Install Mercurial, if needed</h2>
+<h2 id="git">Install Git, if needed</h2>
 
 <p>
-To perform the next step you must have Mercurial installed. (Check that you
-have an <code>hg</code> command.)
+To perform the next step you must have Git installed. (Check that you
+have a <code>git</code> command before proceeding.)
 </p>
 
 <p>
-If you do not have a working Mercurial installation,
+If you do not have a working Git installation,
 follow the instructions on the
-<a href="http://mercurial.selenic.com/downloads">Mercurial downloads</a> page.
-</p>
-
-<p>
-Mercurial versions 1.7.x and up require the configuration of
-<a href="http://mercurial.selenic.com/wiki/CACertificates">Certification Authorities</a>
-(CAs). Error messages of the form:
-</p>
-
-<pre>
-warning: code.google.com certificate with fingerprint b1:af: ... bc not verified (check hostfingerprints or web.cacerts config setting)
-</pre>
-
-<p>
-when using Mercurial indicate that the CAs are missing.
-Check your Mercurial version (<code>hg --version</code>) and
-<a href="http://mercurial.selenic.com/wiki/CACertificates#Configuration_of_HTTPS_certificate_authorities">configure the CAs</a>
-if necessary.
+<a href="http://git-scm.com/downloads">Git downloads</a> page.
 </p>
 
 
@@ -121,22 +104,24 @@ if necessary.
 <p>Go will install to a directory named <code>go</code>.
 Change to the directory that will be its parent
 and make sure the <code>go</code> directory does not exist.
-Then check out the repository:</p>
+Then clone the repository and check out the latest release tag:</p>
 
 <pre>
-$ hg clone -u release https://code.google.com/p/go
+$ git clone https://go.googlesource.com/go
+$ cd go
+$ git checkout go1.4
 </pre>
 
-<h2 id="head">(Optional) Switch to the default branch</h2>
+<h2 id="head">(Optional) Switch to the master branch</h2>
 
 <p>If you intend to modify the go source code, and
 <a href="/doc/contribute.html">contribute your changes</a>
 to the project, then move your repository
-off the release branch, and onto the default (development) branch.
+off the release branch, and onto the master (development) branch.
 Otherwise, skip this step.</p>
 
 <pre>
-$ hg update default
+$ git checkout master
 </pre>
 
 <h2 id="install">Install Go</h2>
@@ -259,7 +244,7 @@ $ go get golang.org/x/tools/cmd/godoc
 
 <p>
 To install these tools, the <code>go</code> <code>get</code> command requires 
-that <a href="#mercurial">Mercurial</a> be installed locally.
+that <a href="#git">Git</a> be installed locally.
 </p>
 
 <p>
@@ -292,22 +277,18 @@ that receives a message summarizing each checkin to the Go repository.
 </p>
 
 <p>
-Bugs can be reported using the <a href="//code.google.com/p/go/issues/list">Go issue tracker</a>.
+Bugs can be reported using the <a href="//golang.org/issue/new">Go issue tracker</a>.
 </p>
 
 
 <h2 id="releases">Keeping up with releases</h2>
 
 <p>
-The Go project maintains a stable tag in its Mercurial repository:
-<code>release</code>.
-</p>
-
-<p>
-The <code>release</code> tag refers to the current stable release of Go.
-Most Go users should use this version. New releases are announced on the
+New releases are announced on the
 <a href="//groups.google.com/group/golang-announce">golang-announce</a>
 mailing list.
+Each announcement mentions the latest release tag, for instance,
+<code>go1.4</code>.
 </p>
 
 <p>
@@ -316,11 +297,13 @@ To update an existing tree to the latest release, you can run:
 
 <pre>
 $ cd go/src
-$ hg pull
-$ hg update release
+$ git fetch
+$ git checkout <i>&lt;tag&gt;</i>
 $ ./all.bash
 </pre>
 
+Where <code>&lt;tag&gt;</code> is the version string of the release.
+
 
 <h2 id="environment">Optional environment variables</h2>