Add 'flex-line-pack:distribute', per mailing list.

Author: tabatkins

css3-flexbox/Overview.html

@@ -1637,7 +1637,7 @@ <h3 id=flex-line-pack><span class=secno>6.1. </span> &lsquo;<a
     <tr>
      <th><a href="http://dev.w3.org/csswg/css-module/#values">Value</a>:
 
-     <td>start | end | center | justify | stretch
+     <td>start | end | center | justify | distribute | stretch
 
     <tr>
      <th>Initial:
@@ -1720,6 +1720,17 @@ <h3 id=flex-line-pack><span class=secno>6.1. </span> &lsquo;<a
     the remaining lines in the flexbox are distributed so that the empty
     space between any two adjacent lines is the same.
 
+   <dt><dfn id=flex-line-pack-distribute>distribute</dfn>
+
+   <dd>Lines are evenly distributed in the flexbox, with half-size spaces on
+    either end. If the leftover free-space is negative or there is only a
+    single line in the flexbox, this value is identical to &lsquo;<a
+    href="#flex-line-pack-center"><code class=css>center</code></a>&rsquo;.
+    Otherwise, the lines in the flexbox are distributed such that the empty
+    space between any two adjacent lines is the same, and the empty space
+    before the first and after the last lines in the flexbox are half the
+    size of the other empty spaces.
+
    <dt><dfn id=flex-line-pack-stretch>stretch</dfn>
 
    <dd>Lines stretch to take up the remaining space. If the leftover
@@ -2408,7 +2419,7 @@ <h2 class=no-num id=property>Property index</h2>
     <tr>
      <th><a class=property href="#flex-line-pack0">flex-line-pack</a>
 
-     <td>start | end | center | justify | stretch
+     <td>start | end | center | justify | distribute | stretch
 
      <td>start
 
@@ -2512,8 +2523,9 @@ <h2 class=no-num id=index>Index</h2>
    <li>cross-start, <a href="#cross-start"
     title=cross-start><strong>2.</strong></a>
 
-   <li>distribute, <a href="#flex-pack-distribute"
-    title=distribute><strong>5.1.</strong></a>
+   <li>distribute, <a href="#flex-line-pack-distribute"
+    title=distribute><strong>6.1.</strong></a>, <a
+    href="#flex-pack-distribute" title=distribute><strong>5.1.</strong></a>
 
    <li>distribute the free space, <a href="#distribute-the-free-space"
     title="distribute the free space"><strong>7.</strong></a>

css3-flexbox/Overview.src.html

@@ -796,7 +796,7 @@ <h3 id='flex-line-pack'>
 			<td><dfn>flex-line-pack</dfn>
 		<tr>
 			<th><a href="http://dev.w3.org/csswg/css-module/#values">Value</a>:
-			<td>start | end | center | justify | stretch
+			<td>start | end | center | justify | distribute | stretch
 		<tr>
 			<th>Initial:
 			<td>start
@@ -832,6 +832,9 @@ <h3 id='flex-line-pack'>
 		<dt><dfn id='flex-line-pack-justify'>justify</dfn></dt>
 		<dd>Lines are evenly distributed in the flexbox.  If the leftover free-space is negative or there is only a single line in the flexbox, this value is identical to ''start''.  Otherwise, the <i>cross-start</i> edge of the first line in the flexbox is placed flush with the <i>cross-start</i> content edge of the flexbox, the <i>cross-end</i> edge of the last line in the flexbox is placed flush with the <i>cross-end</i> content edge of the flexbox, and the remaining lines in the flexbox are distributed so that the empty space between any two adjacent lines is the same.</dd>
 
+		<dt><dfn id='flex-line-pack-distribute'>distribute</dfn></dt>
+		<dd>Lines are evenly distributed in the flexbox, with half-size spaces on either end.  If the leftover free-space is negative or there is only a single line in the flexbox, this value is identical to ''center''.  Otherwise, the lines in the flexbox are distributed such that the empty space between any two adjacent lines is the same, and the empty space before the first and after the last lines in the flexbox are half the size of the other empty spaces.</dd>
+
 		<dt><dfn id='flex-line-pack-stretch'>stretch</dfn></dt>
 		<dd>Lines stretch to take up the remaining space.  If the leftover free-space is negative, this value is identical to ''start''.  Otherwise, the free-space is split equally between all of the lines, increasing their cross size.
 	</dl>