title: Change Solr search directory to my custom named index directory
body: <p>In the /data directory of solr, suppose, I have three folders named as index, custom, spellCheck.
  So, the problem is when I open up localhost:8983/solr/admin and try to search, solr makes a search only in the index folder. I want solr to search in the 'custom' folder inside the /data folder. 
  Can it be done?</p>
  
  <p>If I see the 'schema browser', and go through the schema information, there is a 'directory' property
  such as,
  directory:  org.apache.lucene.store.NIOFSDirectory:org.apache.lucene.store.NIOFSDirectory@ <strong><em>/home/mypc/softwares/apache-solr-3.4.0/example/solr/data/index</em></strong> lockFactory=org.apache.lucene.store.NativeFSLockFactory@6c5482</p>
  
  <p>I think that /solr/data/index directory should point to /solr/data/custom, for the search to work.</p>