change the rules for maintaining AUTHORS and CONTRIBUTORS files.

the current system is too painful, so instead let's just have the coders tell us the details.
we can update the files ourselves.

R=rsc, r1
CC=golang-dev
https://golang.org/cl/157158

doc/contribute.html

@@ -626,20 +626,36 @@ who “The Go Authors”—the copyright holders—are.
 </p>
 
 <p>
-When sending your first change list, you should prepare
-and send a separate change list adding yourself to
-<code>CONTRIBUTORS</code> and adding
-the copyright holder for your code to <code>AUTHORS</code> if not already listed.
+When sending your first change list, you need to do two extra things before your
+code can be accepted.
+</p>
+<ol>
+<li>
 If you are the copyright holder, you will need to agree to
-the <a href="http://code.google.com/legal/individual-cla-v1.0.html">individual contributor license agreement</a>,
-which can be completed online;
+the <a href="http://code.google.com/legal/individual-cla-v1.0.html">individual
+contributor license agreement</a>, which can be completed online;
 if your organization is the copyright holder, the organization
 will need to agree to the <a href="http://code.google.com/legal/corporate-cla-v1.0.html">corporate contributor license agreement</a>.
-If the copyright holder for your code has already completed the
+(If the copyright holder for your code has already completed the
 agreement in connection with another Google open source project,
-it does not need to be completed again.
-One of the Go developers at Google will approve and submit
-this change after checking the list of people/organizations
-that have completed the agreement.
+it does not need to be completed again.)
+<li>
+Send mail, or include information in the change list description,
+notifying us how you should be represented in the <code>CONTRIBUTORS</code>
+and <code>AUTHORS</code> files so we can add your information to
+them.  Specifically, tell us either that you've completed the
+individual agreement or tell us the name of your organization once
+it has completed the corporate agreement.  One of the Go developers
+at Google will add you to <code>CONTRIBUTORS</code> and, if
+appropriate, <code>AUTHORS</code> after verifying that the agreement
+has been completed.  We will use the email address you use on
+codereview.appspot.com as the email address in these files.</ol>
+<p>
+This rigamarole needs to be done only for your first submission.
 </p>
 
+<p>
+Once the code is ready to be committed,
+one of the Go developers at Google will approve and submit
+your change.
+</p>