[wwwdocs] [5/3] projects/cxx-status.html -- introduce global CSS for tables

[Gerald Pfeifer]

Somehow four cases of inline styles had remained, which did not
actually make a difference anymore, but still can be simplified.

Applied.

Gerald

Remove four final, and superflous cases of style="text-align:center;".

Index: projects/cxx-status.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/projects/cxx-status.html,v
retrieving revision 1.7
diff -u -r1.7 cxx-status.html
--- projects/cxx-status.html	4 Apr 2016 04:50:05 -0000	1.7
+++ projects/cxx-status.html	5 Apr 2016 15:34:45 -0000
@@ -174,14 +174,7 @@
     is <strong>experimental</strong>. No attempt will be made to maintain
     backward compatibility with implementations of features that do not reflect
     the final standard.</p>
-    <!--
-    <tr>
-      <td> </td>
-      <td> </td>
-      <td class="unsupported" style="text-align:center;">No</td>
-      <td> </td>
-    </tr>
-    -->
+
   <table>
     <tr class="separator">
       <th>Technical Specification</th>
@@ -193,14 +186,14 @@
     <tr>
       <td>Concepts</td>
       <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4377.pdf">N4377</a></td>
-      <td class="supported" style="text-align:center;"> 6 </td>
+      <td class="supported">6</td>
       <td>-fconcepts</td>
       <td> __cpp_concepts >= 201507 </td>
     </tr>
     <tr>
       <td>Transactional Memory</td>
       <td><a href="http://www.open-std.org/Jtc1/sc22/wg21/docs/papers/2015/n4514.pdf">N4514</a></td>
-      <td class="supported" style="text-align:center;"> 6 (no atomic_cancel)</td>
+      <td class="supported">6 (no atomic_cancel)</td>
       <td>-fgnu-tm</td>
       <td> __cpp_transactional_memory >= 201505 </td>
     </tr>
@@ -670,7 +662,7 @@
     </tr>
 
     <tr class="separator">
-      <th style="text-align:center;" colspan="4">Concurrency</th>
+      <th colspan="4">Concurrency</th>
     </tr>
 
     <tr>
@@ -742,7 +734,7 @@
     </tr>
 
     <tr class="separator">
-      <th style="text-align:center;" colspan="4">C99 Features in C++11</th>
+      <th colspan="4">C99 Features in C++11</th>
     </tr>
 
     <tr>