Updated documentation for "ant.project.name"

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268246 13f79535-47bb-0310-9956-ffa450edef68

docs/index.html

@@ -386,6 +386,8 @@ name of the operating system.</p>
   <li>basedir - the absolute path of the project's basedir (as set
     with the basedir attribute of &lt;project&gt;).</li>
   <li>ant.file - the absolute path of the build file.</li>
+  <li>ant.project.name - the name of the project that is currently executing. It is 
+      set by the name attribute in project tag of build file.</li>
   <li>ant.java.version - the JVM version Ant detected. Currently it
     can hold the values &quot;1.1&quot;, &quot;1.2&quot; and
     &quot;1.3&quot;.</li>