doc/go1.5.html: fix and expand crypto/tls changes

- Fix incomplete description of minimum protocol version.
- Add mention of the new ConnectionState.OCSPResponse field.
- Clarify session ticket key rotation description.

Change-Id: I6b62d30a4d0e0f84fd2c0e70e8f66ec14e6a5a90
Reviewed-on: https://go-review.googlesource.com/12197Reviewed-by: Rob Pike <r@golang.org>

doc/go1.5.html

@@ -792,19 +792,28 @@ This change guards against certain attacks.
 
 <li>
 The <a href="/pkg/crypto/tls/"><code>crypto/tls</code></a> package
-now defaults to TLS 1.0.
+minimum protocol version now defaults to TLS 1.0.
 The old default, SSLv3, is still available through <a href="/pkg/crypto/tls/#Config"><code>Config</code></a> if needed.
 </li>
 
 <li>
-Also, the <a href="/pkg/crypto/tls/"><code>crypto/tls</code></a> package
+The <a href="/pkg/crypto/tls/"><code>crypto/tls</code></a> package
 now supports Signed Certificate Timestamps (SCTs) as specified in RFC 6962.
 The server serves them if they are listed in the
 <a href="/pkg/crypto/tls/#Certificate"><code>Certificate</code></a> struct,
 and the client requests them and exposes them, if present,
 in its <a href="/pkg/crypto/tls/#ConnectionState"><code>ConnectionState</code></a> struct.
-The <a href="/pkg/crypto/tls/"><code>crytpo/tls</code></a> server implementation
-will also now always call the
+
+<li>
+The stapled OCSP response to a <a href="/pkg/crypto/tls/"><code>crypto/tls</code></a> client connection,
+previously only available via the
+<a href="/pkg/crypto/tls/#Conn.OCSPResponse"><code>OCSPResponse</code></a> method,
+is now exposed in the <a href="/pkg/crypto/tls/#ConnectionState"><code>ConnectionState</code></a> struct.
+</li>
+
+<li>
+The <a href="/pkg/crypto/tls/"><code>crypto/tls</code></a> server implementation
+will now always call the
 <code>GetCertificate</code> function in
 the <a href="/pkg/crypto/tls/#Config"><code>Config</code></a> struct
 to select a certificate for the connection when none is supplied.
@@ -813,7 +822,7 @@ to select a certificate for the connection when none is supplied.
 <li>
 Finally, the session ticket keys in the
 <a href="/pkg/crypto/tls/"><code>crypto/tls</code></a> package
-can now be rotated (changed periodically during an active connection).
+can now be changed while the server is running.
 This is done through the new
 <a href="/pkg/crypto/tls/#Config.SetSessionTicketKeys"><code>SetSessionTicketKeys</code></a>
 method of the