Update prebuilts to go1.10 ab/4625579

Test: m -j blueprint_tools
Change-Id: I24caea588e0801ed52e256b2076e3359190c2525
diff --git a/doc/install.html b/doc/install.html
index 7f32f68..f17dce5 100644
--- a/doc/install.html
+++ b/doc/install.html
@@ -8,15 +8,15 @@
 <h2 id="download">Download the Go distribution</h2>
 
 <p>
-<a href="https://golang.org/dl/" id="start" class="download">
+<a href="/dl/" id="start" class="download">
 <span class="big">Download Go</span>
 <span class="desc">Click here to visit the downloads page</span>
 </a>
 </p>
 
 <p>
-<a href="https://golang.org/dl/" target="_blank">Official binary
-distributions</a> are available for the FreeBSD (release 8-STABLE and above),
+<a href="/dl/" target="_blank">Official binary
+distributions</a> are available for the FreeBSD (release 10-STABLE and above),
 Linux, Mac OS X (10.8 and above), and Windows operating systems and
 the 32-bit (<code>386</code>) and 64-bit (<code>amd64</code>) x86 processor
 architectures.
@@ -33,7 +33,7 @@
 <h2 id="requirements">System requirements</h2>
 
 <p>
-Go <a href="https://golang.org/dl/">binary distributions</a> are available for these supported operating systems and architectures.
+Go <a href="/dl/">binary distributions</a> are available for these supported operating systems and architectures.
 Please ensure your system meets these requirements before proceeding.
 If your OS or architecture is not on the list, you may be able to
 <a href="/doc/install/source">install from source</a> or
@@ -47,7 +47,7 @@
 <th align="center">Notes</th>
 </tr>
 <tr><td colspan="3"><hr></td></tr>
-<tr><td>FreeBSD 9.3 or later</td> <td>amd64, 386</td> <td>Debian GNU/kFreeBSD not supported</td></tr>
+<tr><td>FreeBSD 10.3 or later</td> <td>amd64, 386</td> <td>Debian GNU/kFreeBSD not supported</td></tr>
 <tr valign='top'><td>Linux 2.6.23 or later with glibc</td> <td>amd64, 386, arm, arm64,<br>s390x, ppc64le</td> <td>CentOS/RHEL 5.x not supported.<br>Install from source for other libc.</td></tr>
 <tr><td>macOS 10.8 or later</td> <td>amd64</td> <td>use the clang or gcc<sup>&#8224;</sup> that comes with Xcode<sup>&#8225;</sup> for <code>cgo</code> support</td></tr>
 <tr><td>Windows XP SP2 or later</td> <td>amd64, 386</td> <td>use MinGW gcc<sup>&#8224;</sup>. No need for cygwin or msys.</td></tr>
@@ -77,7 +77,7 @@
 <h3 id="tarball">Linux, Mac OS X, and FreeBSD tarballs</h3>
 
 <p>
-<a href="https://golang.org/dl/">Download the archive</a>
+<a href="/dl/">Download the archive</a>
 and extract it into <code>/usr/local</code>, creating a Go tree in
 <code>/usr/local/go</code>. For example:
 </p>
@@ -138,7 +138,7 @@
 <h3 id="osx">Mac OS X package installer</h3>
 
 <p>
-<a href="https://golang.org/dl/">Download the package file</a>,
+<a href="/dl/">Download the package file</a>,
 open it, and follow the prompts to install the Go tools.
 The package installs the Go distribution to <code>/usr/local/go</code>.
 </p>
@@ -167,7 +167,7 @@
 <h4 id="windows_msi">MSI installer</h4>
 
 <p>
-Open the <a href="https://golang.org/dl/">MSI file</a>
+Open the <a href="/dl/">MSI file</a>
 and follow the prompts to install the Go tools.
 By default, the installer puts the Go distribution in <code>c:\Go</code>.
 </p>
@@ -185,7 +185,7 @@
 <h4 id="windows_zip">Zip archive</h4>
 
 <p>
-<a href="https://golang.org/dl/">Download the zip file</a> and extract it into the directory of your choice (we suggest <code>c:\Go</code>).
+<a href="/dl/">Download the zip file</a> and extract it into the directory of your choice (we suggest <code>c:\Go</code>).
 </p>
 
 <p>