[Solr Wiki] Update of "SolrRelevancyFAQ" by MarkusJelsma

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The "SolrRelevancyFAQ" page has been changed by MarkusJelsma.
http://wiki.apache.org/solr/SolrRelevancyFAQ?action=diff&rev1=18&rev2=19

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  {{{
  http://localhost:8983/solr/select?q={!boost b=$dateboost v=$qq defType=dismax}&dateboost=recip(ms(NOW,manufacturedate_dt),3.16e-11,1,1)&qf=text&pf=text&qq=ipod
  }}}
+ 
+ Consider using reduced precision to prevent excessive memory consumption. You would instead use '''recip(ms(NOW/HOUR,mydatefield),3.16e-11,1,1)'''.
+ See [[http://search-lucene.com/m/nkgRTTSRos1/FunctionQueries+and+FieldCache+and+OOM&subj=FunctionQueries+and+FieldCache+and+OOM|this thread]] for more information.
+ 
  == How do I give a very low boost to documents that match my query ==
  In general the problem is that a "low" boost is still a boost, it can only improve the score of documents that match. One way to fake a "negative boost" is to give a high boost to everything that does *not* match. For example: