remove mention of version of oro in perforce.html,

referring to install.html instead


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@355451 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/OptionalTasks/perforce.html

@@ -28,8 +28,9 @@ However, the addition of new p4 commands is a pretty simple task (see the source
 Although it is possible to use these commands on the desktop, 
 they were primarily intended to be used by automated build systems.</p>
 
-<p><b>Note:</b> These tasks require the <a href="http://jakarta.apache.org/oro" target="_top">oro 2.0.XXX</a> regular
-expression package. Simply download this package and copy the jakarta-oro-2.0.XXX.jar file into Ant's lib directory.
+<p><b>Note:</b> These tasks require the <a href="http://jakarta.apache.org/oro" target="_top">oro</a> regular
+expression package. See <a href="../install.html#librarydependencies">library dependencies</a> for the precise
+version required.
 You will also need the Perforce client executable (p4 or p4.exe but not p4win.exe) in your path.
 </p>