Assign ids to more tags in Xserver-Dtrace.xml

Keeps xsltproc from adding random-number id tags to html output so that
it's easier to see real changes vs. different random numbers.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Matt Dew <marcoz@osource.org>
(cherry picked from commit 58d3d46d6c)

doc/xml/dtrace/Xserver-DTrace.xml

@@ -15,7 +15,7 @@
       </affiliation>
     </author>
     <releaseinfo>X.Org Xserver version &xserver.version;</releaseinfo>
-    <legalnotice>
+    <legalnotice id="copyright">
       <para>
 Copyright (c) 2005, 2006, 2007, 2010, Oracle and/or its affiliates.
 All rights reserved.
@@ -79,7 +79,7 @@ DEALINGS IN THE SOFTWARE.
       <parameter>arg2</parameter>, etc.  These tables should help you
       determine what the real data is for each of the probe arguments.
 
-    <table>
+    <table id="Probes_and_their_arguments">
       <title>Probes and their arguments</title>
       <tgroup cols='7'>
 	<colspec colname="probe" colwidth="2*"/>
@@ -195,7 +195,7 @@ DEALINGS IN THE SOFTWARE.
       To access data buffers referenced via <type>uintptr_t</type>'s, you will
       need to use <ulink url="http://wikis.sun.com/display/DTrace/Actions+and+Subroutines#ActionsandSubroutines-{{copyin}}"><function>copyin()</function></ulink>.
 
-    <table>
+    <table id="Probe_Arguments">
       <title>Probe Arguments</title>
       <tgroup cols='3'>
 	<colspec colname="arg" colwidth="2*"/>
@@ -313,7 +313,7 @@ DEALINGS IN THE SOFTWARE.
   <sect1 id="examples">
     <title>Examples</title>
 
-    <example>
+    <example id="Counting_requests_by_request_name">
       <title>Counting requests by request name</title>
 
       <para>
@@ -370,7 +370,7 @@ Xserver*:::request-start
       </para>
     </example>
 
-    <example>
+    <example id="Get_average_CPU_time_per_request">
       <title>Get average CPU time per request</title>
 
       <para>This script records the CPU time used between the probes at
@@ -419,7 +419,7 @@ Xserver*:::request-done
       </para>
     </example>
 
-    <example>
+    <example id="Monitoring_clients_that_connect_and_disconnect">
       <title>Monitoring clients that connect and disconnect</title>
 
       <para>
@@ -476,7 +476,7 @@ CPU     ID                    FUNCTION:NAME
       </para>
     </example>
 
-    <example>
+    <example id="Monitoring_clients_creating_Pixmaps">
       <title>Monitoring clients creating Pixmaps</title>
 
       <para>