Optimizing range constraints

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Optimizing range constraints

Mike Klaas
Tim Sturge posted a nice optimization for range constraints/filters  
(e.g. "age:[10 TO 35]") here:

https://issues.apache.org/jira/browse/LUCENE-1461

It has a natural applicability to Solr's fq range filters, which can  
be abysmally slow for large ranges.  Could be an interesting project  
for contributors who love optimizing speed (100-fold, in this case)  
<g>.  I'd definitely do it had I the time.

-Mike