MONDRIAN: Convert architecture diagram to Visio.

[git-p4: depot-paths = "//open/mondrian/": change = 3873]

doc/architecture.html

@@ -65,18 +65,19 @@ <h2><a name="Layers_of_a_Mondrian_system">Layers of a Mondrian system</a></h2>
 (except in the case of JSP pages generated on the server).</p>
 
 <blockquote>
-	<table border="1" style="border-collapse: collapse" cellspacing="0" bordercolor="#000000" cellpadding="3">
-		<tr>
-			<td bordercolor="#000000"><a href="architecture_full.png">
-			<img border="0" src="architecture.jpg" width="800" height="614"></a></td>
-		</tr>
-		<tr>
-			<td bordercolor="#000000">
+    <table border="1" style="border-collapse: collapse" cellspacing="0" bordercolor="#000000" cellpadding="3">
+        <tr>
+            <td bordercolor="#000000"><a href="architecture_full.png">
+            <img border="0" src="architecture.jpg" width="800" height="555"></a></td>
+        </tr>
+        <tr>
+            <td bordercolor="#000000">
 
-			<p align="center"><a name="Figure_1:_Mondrian_architecture">Figure 1: Mondrian architecture</a></td>
-		</tr>
-	</table>
+            <p align="center"><a name="Figure_1:_Mondrian_architecture">Figure 1: Mondrian architecture</a></td>
+        </tr>
+    </table>
 </blockquote>
+
 <h2><a name="Storage_and_aggregation_strategies">Storage and aggregation
 strategies</a></h2>
 <p>OLAP Servers are generally categorized according to how they store their