Update URL for "Generalized Partial Indexes" paper to point to a cached

version.

Backpatch to 8.2.X.

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@@ -1,4 +1,4 @@
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+
 
  
   Bibliography
@@ -326,12 +326,11 @@ [email protected]
 
    
    
-    <ulink url="http://simon.cs.cornell.edu/home/praveen/papers/partindex.de95.ps.Z"></div>
<div class="diff add">+    <title>Generalized Partial Indexes</div>
<div class="diff add">+    <ulink url="http://citeseer.ist.psu.edu/seshadri95generalized.html">(cached version)</div>
<div class="diff ctx"> <!-- </div>
<div class="diff rem">-     above URL is invalid, cached copy at</div>
<div class="diff rem">-     http://citeseer.ist.psu.edu/seshadri95generalized.html</div>
<div class="diff add">+     Original URL:  http://citeseer.ist.psu.edu/seshadri95generalized.html</div>
<div class="diff ctx"> --></div>
<div class="diff rem">-    Generalized Partial Indexes</div>
<div class="diff ctx">     </ulink></div>
<div class="diff ctx">     
     Seshardri, 1995