Properly handle a ! token in declaration-value that doesn't have 'important' following it.

--HG--
extra : rebase_source : 303216fc285db11dcd40d1efa6afb5f3b3a74adf

Author: tabatkins

css3-syntax/Overview.html

@@ -2385,6 +2385,9 @@ <h4 id=declaration-value-mode><span class=secno>3.6.8. </span> <dfn
      declaration as meaning that the declaration has its important flag set.
      It's not entirely clear yet that that's the behavior we want.
 
+    <p> Otherwise, append the token to the value of the <a
+     href="#current-declaration"><i>current declaration</i></a>.
+
    <dt>semicolon token
 
    <dd> Append the <a href="#current-declaration"><i>current

css3-syntax/Overview.src.html

@@ -2409,6 +2409,11 @@ <h4>
 				as meaning that the declaration has its important flag set.
 				It's not entirely clear yet that that's the behavior we want.
 
+			<p>
+				Otherwise,
+				append the token
+				to the value of the <i>current declaration</i>.
+
 		<dt>semicolon token
 		<dd>
 			Append the <i>current declaration</i>