[css-overflow] When one axis is visible and the other is not, visible should change to auto rather than hidden.

Thanks to Florian Rivoal for pointing this out; see
http://lists.w3.org/Archives/Public/www-style/2014Nov/0446.html

Author: dbaron

css-overflow/Overview.html

@@ -11,7 +11,7 @@
 
   <meta content="CSS Overflow Module Level 3" name=dcterms.title>
   <meta content=text name=dcterms.type>
-  <meta content=2014-11-26 name=dcterms.date>
+  <meta content=2014-12-03 name=dcterms.date>
   <meta content="L. David Baron" name=dcterms.creator>
   <meta content=W3C name=dcterms.publisher>
   <meta content="http://dev.w3.org/csswg/css-overflow-3/"
@@ -127,7 +127,7 @@
 
    <h1>CSS Overflow Module Level 3</h1>
 
-   <h2 class="no-num no-toc">Editor's Draft 26 November 2014</h2>
+   <h2 class="no-num no-toc">Editor's Draft 3 December 2014</h2>
 
    <dl>
     <dt>This version:
@@ -750,8 +750,8 @@ <h2 id=overflow-properties><span class=secno>3. </span>Overflow properties</h2>
      href="#scrolling-values"><i>scrolling values</i></a> and the other is
      ‘<a href="#visible"><code class=css>visible</code></a>’, then
      computed values are the cascaded values with ‘<a href="#visible"><code
-     class=css>visible</code></a>’ changed to ‘<a href="#hidden"><code
-     class=css>hidden</code></a>’.
+     class=css>visible</code></a>’ changed to ‘<a href="#auto"><code
+     class=css>auto</code></a>’.
 
     <li> Otherwise, the computed values are as specified.
    </ol>

css-overflow/Overview.src.html

@@ -571,7 +571,7 @@ <h2 id="overflow-properties">Overflow properties</h2>
 				one of the <i>scrolling values</i>
 				and the other is ''visible'',
 				then computed values are the cascaded values
-				with ''visible'' changed to ''hidden''.
+				with ''visible'' changed to ''auto''.
 			</li>
 			<li>
 				Otherwise, the computed values are as specified.