[Lucene-java Wiki] Update of "ReleaseNote33" by RobertMuir

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The "ReleaseNote33" page has been changed by RobertMuir:
http://wiki.apache.org/lucene-java/ReleaseNote33?action=diff&rev1=1&rev2=2

Comment:
add some stuff in 3.x branch to the in-progress release highlights

  
  Lucene 3.3 Release Highlights
  
+  * A TopDocs.merge API which facilitates merging results across different 
+    shards, as well as SearchGroup.merge and TopGroups.merge for distributed
+    grouping support.
+ 
   * Suggest/Autocomplete functionality to the spellchecker module, 
     with three implementations: Jaspell, Ternary Trie, and Finite State.
  
@@ -25, +29 @@

  
   * Single-pass grouping implementation based on block document indexing.
  
+  * Improvements to MMapDirectory (now also the default implementation 
+    returned by FSDirectory.open on 64-bit Linux).
+ 
+  * NRTManager API to simplify handling near-realtime search handling,
+    allowing the app to control when indexing changes must be visible
+    to search requests.
+ 
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