[clang][docs] mark v21 as released (llvm#158629)

Update for the status pages now that v21.1 is out.

Also specify WG14 N3006 "Underspecified object definitions" as available since Clang 19.

Author: h-vetinari

clang/www/c_status.html

@@ -176,7 +176,7 @@ <h2 id="c2y">C2y implementation status</h2>
     <tr>
       <td>Obsolete implicitly octal literals and add delimited escape sequences</td>
       <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3353.htm">N3353</a></td>
-      <td class="unreleased" align="center">Clang 21</td>
+      <td class="full" align="center">Clang 21</td>
     </tr>
     <tr>
       <td>'if' declarations, v2</td>
@@ -243,11 +243,11 @@ <h2 id="c2y">C2y implementation status</h2>
     </tr>
       <tr>
         <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3369.pdf">N3369</a></td>
-        <td class="unreleased" align="center">Clang 21</td>
+        <td class="full" align="center">Clang 21</td>
       </tr>
       <tr> <!-- Graz Feb 2025 -->
         <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3469.htm">N3469</a></td>
-        <td class="unreleased" align="center">Clang 21</td>
+        <td class="full" align="center">Clang 21</td>
       </tr>
     <tr>
       <td>Named loops, v3</td>
@@ -278,7 +278,7 @@ <h2 id="c2y">C2y implementation status</h2>
     <tr>
       <td>Slay Some Earthly Demons X</td>
       <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3409.pdf">N3409</a></td>
-      <td class="unreleased" align="center">Clang 21</td>
+      <td class="full" align="center">Clang 21</td>
 	</tr>
     <tr>
       <td>Slay Some Earthly Demons XI</td>
@@ -288,7 +288,7 @@ <h2 id="c2y">C2y implementation status</h2>
     <tr>
       <td>Slay Some Earthly Demons XII</td>
       <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3411.pdf">N3411</a></td>
-      <td class="unreleased" align="center">Clang 21</td>
+      <td class="full" align="center">Clang 21</td>
 	</tr>
     <tr>
       <td>Slay Some Earthly Demons XIII</td>
@@ -710,7 +710,7 @@ <h2 id="c2x">C23 implementation status</h2>
     <tr>
       <td>Disambiguate the storage class of some compound literals</td>
       <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2819.pdf">N2819</a></td>
-      <td class="unreleased" align="center">Clang 21</td>
+      <td class="full" align="center">Clang 21</td>
     </tr>
     <tr>
       <td>Add annotations for unreachable control flow v2</td>
@@ -864,7 +864,7 @@ <h2 id="c2x">C23 implementation status</h2>
     <tr>
       <td>Underspecified object definitions</td>
       <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3006.htm">N3006</a></td>
-      <td class="unreleased" align="center">Yes</td>
+      <td class="full" align="center">Clang 19</td>
     </tr>
     <tr>
       <td>Type inference for object declarations</td>
@@ -899,7 +899,7 @@ <h2 id="c2x">C23 implementation status</h2>
     <tr>
       <td>Improved tag compatibility</td>
       <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3037.pdf">N3037</a></td>
-      <td class="unreleased" align="center">Clang 21</td>
+      <td class="full" align="center">Clang 21</td>
     </tr>
     <tr>
       <td>#embed</td>
@@ -941,7 +941,7 @@ <h2 id="c11">C11 implementation status</h2>
     <tr>
       <td>Extending the lifetime of temporary objects (factored approach)</td>
       <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n1285.htm">N1285</a></td>
-      <td class="unreleased" align="center">Clang 21</td>
+      <td class="full" align="center">Clang 21</td>
     </tr>
     <tr>
       <td>Requiring signed char to have no padding bits</td>

clang/www/cxx_status.html

@@ -223,7 +223,7 @@ <h2 id="cxx26">C++2c implementation status</h2>
  <tr>
   <td>Structured binding declaration as a condition</td>
   <td><a href="https://wg21.link/P0963R3">P0963R3</a></td>
-  <td class="unreleased" align="center">Clang 21</td>
+  <td class="full" align="center">Clang 21</td>
  </tr>
  <!--Poland, Fall 2024-->
  <tr>
@@ -244,7 +244,7 @@ <h2 id="cxx26">C++2c implementation status</h2>
  <tr>
   <td>Structured Bindings can introduce a Pack</td>
   <td><a href="https://wg21.link/P1061R10">P1061R10</a></td>
-  <td class="unreleased" align="center">Clang 21</td>
+  <td class="full" align="center">Clang 21</td>
  </tr>
  <tr>
   <td>The Oxford variadic comma</td>
@@ -280,7 +280,7 @@ <h2 id="cxx26">C++2c implementation status</h2>
  <tr>
   <td>Trivial Relocatability</pre></td>
   <td><a href="https://wg21.link/P2786">P2786R13</a></td>
-  <td class="unreleased" align="center">Clang 21</td>
+  <td class="full" align="center">Clang 21</td>
  </tr>
  <tr>
   <td><pre>#embed</pre></td>
@@ -312,7 +312,7 @@ <h2 id="cxx26">C++2c implementation status</h2>
  <tr>
   <td>Attaching main to the global module</td>
   <td><a href="https://wg21.link/P3618">P3618R0</a> (<a href="#dr">DR</a>)</td>
-  <td class="unreleased" align="center">Clang 21</td>
+  <td class="full" align="center">Clang 21</td>
  </tr>
  <tr>
   <td>Expansion Statements</td>