title: schema.xml changes from Solr4 to Solr5
body: <p>I'm migrating from Solr 4.6.0 to 5.4.0. We opted to use our old schema.xml instead of using the managed_schema because we have quite a few copyFields. Starting up solr server, we got this error:</p>
  
  <blockquote>
    <p>Plugin init failure for [schema.xml] fieldType "text_general": Plugin init failure for [schema.xml] analyzer/filter: Error instantiating class: 'org.apache.lucene.analysis.core.StopFilterFactory'</p>
  </blockquote>
  
  <p>On googling, we saw that StopFilterFactory is not deprecated yet. What could be the problem?</p>
  
  <p>Also there's no comprehensive guide on how to use a schema from Solr4 in Solr5. Any suggestions?</p>
  
  <p>Thanks</p>