ACTION-1691: UIA mapping for aria-errormessage.

Added UIA mapping for aria-errormessage.  Added "TBD" for the other
three AAPIs.

core-aam/core-aam.html

@@ -1416,7 +1416,7 @@ <h4>Not Mapped</h4>
                       <li>Expose pointer to the accessible object in <code>IA2_RELATION_CONTROLLER_FOR</code>                      </li>
                       <li>Expose reverse relations as described in <a href="#mapping_additional_relations">Relations</a>.</li>
                   </ul></td>
-                  <td>Expose pointer to the accessible object <code>ControllerFor</code> property</td>
+                  <td>Expose pointer to the accessible object using <code>ControllerFor</code> property</td>
                   <td>Expose pointer to the accessible object <code>RELATION_CONTROLLER_FOR</code>
                     <p>Expose reverse relations as described in <a href="#mapping_additional_relations">Relations</a>.</p></td>
                   <td><code>array AXLinkedUIElements</code> contains pointers to nodes matching IDREFs</td>
@@ -1493,6 +1493,13 @@ <h4>Not Mapped</h4>
                   <p><a href="#not_mapped">Not mapped</a> if not specified by the author.</p></td>
                   <td><a href="#not_mapped">Not mapped*</a></td>
                 </tr>
+                <tr id="ariaErrorMessage">
+                  <th>[ARIA 1.1]  <a class="property-reference" href="#aria-errormessage"><code>aria-errormessage</code></a></th>
+                  <td>TBD</td>
+                  <td>Expose pointer to the accessible object using <code>ControllerFor</code> property.</td>
+                  <td>TBD</td>
+                  <td>TBD</td>
+                </tr>
                 <tr id="ariaExpandedTrue">
                   <th><a class="state-reference" href="#aria-expanded"><code>aria-expanded</code></a><code>=&quot;true&quot;</code> (state)</th>
                   <td>Set <code>STATE_SYSTEM_EXPANDED</code></td>
@@ -2676,7 +2683,7 @@ <h2>Change Log</h2>
 		<section>
 			<h2>Substantive changes since the <a href="http://www.w3.org/TR/2015/WD-core-aam-1.1-20151119/">last public working draft</a></h2>
 			<ul>
-				<li>02-Feb-2016: Modified UIA mapping of main role to include a Landmark Type and a Localized Landmark Type.</li>
+				<li>02-Feb-2016: Modified UIA mapping of main role to include a Landmark Type and a Localized Landmark Type.  Added UIA mapping for aria-errormessage.</li>
 				<li>25-Jan-2016: Added AXAPI mappings for aria-current.</li>
 				<li>15-Jan-2016: Added UIA mappings for aria-current.</li>
 				<li>11-Jan-2016: Modified UIA mapping for roles article and application.  Finalized IA2 mapping of aria-current.</li>