Add note to potentially roll .c code into template headers

git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@176311 13f79535-47bb-0310-9956-ffa450edef68

doc/releases_plan.xml

@@ -164,6 +164,12 @@
 			<td></td>       
 		</tr>    
 
+		<tr>
+			<td>14</td>
+			<td>Roll .c code into template headers?</td>
+			<td></td>       
+		</tr>    
+
 		<tr>
 			<th></th><th colspan='2'>Features/APIs to be removed</th>
 		</tr>