[css-text] Make text-align-last depend on text-align: justify, and add an issue about renaming 'start end'

Author: fantasai

css-text/Overview.html

@@ -1996,6 +1996,9 @@ <h3 id=text-align><span class=secno>7.1. </span> Text Alignment: the ‘<a
     line and any line immediately after a <a
     href="#forced-line-break"><i>forced line break</i></a>; and ‘<code
     class=css>end</code>’ alignment of any remaining lines.
+    <p class=issue>This value will be removed at the end of the LC period
+     unless someone comes up with a more understandable keyword to replace it
+     with.
   </dl>
 
   <p>A block of text is a stack of <a
@@ -2085,9 +2088,11 @@ <h3 id=text-align-last><span class=secno>7.2. </span> Last Line Alignment:
 
   <p>This property describes how the last line of a block or a line right
    before a <a href="#forced-line-break"><i>forced line break</i></a> is
-   aligned. If a line is also the first line of the block or the first line
-   after a <a href="#forced-line-break"><i>forced line break</i></a>, then,
-   unless ‘<a href="#text-align0"><code
+   aligned when ‘<a href="#text-align0"><code
+   class=property>text-align</code></a>’ is ‘<code
+   class=css>justify</code>’. If a line is also the first line of the block
+   or the first line after a <a href="#forced-line-break"><i>forced line
+   break</i></a>, then, unless ‘<a href="#text-align0"><code
    class=property>text-align</code></a>’ assigns an explicit first line
    alignment (via ‘<code class=css>start end</code>’), ‘<a
    href="#text-align-last0"><code

css-text/Overview.src.html

@@ -1431,6 +1431,7 @@ <h3 id="text-align">
       <dd>Specifies ''start'' alignment of the first line and any line
         immediately after a <i>forced line break</i>; 
         and ''end'' alignment of any remaining lines.
+      <p class="issue">This value will be removed at the end of the LC period unless someone comes up with a more understandable keyword to replace it with.
     </dl>
 
     <p>A block of text is a stack of
@@ -1503,7 +1504,8 @@ <h3 id="text-align-last">
     </table>
 
     <p>This property describes how the last line of a block or a line
-      right before a <i>forced line break</i> is aligned.
+      right before a <i>forced line break</i> is aligned
+      when 'text-align' is ''justify''.
       If a line is also the first line of the block
       or the first line after a <i>forced line break</i>,
       then, unless 'text-align' assigns an explicit first line alignment (via ''start end''),