[Solr Wiki] Update of "Core Discovery (4.4 and beyond)" by DanBolser

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The "Core Discovery (4.4 and beyond)" page has been changed by DanBolser:
https://wiki.apache.org/solr/Core%20Discovery%20%284.4%20and%20beyond%29?action=diff&rev1=13&rev2=14

Comment:
This page is redundant!

  <!> [[Solr4.4]] - there's a new way of defining cores.  Core discovery was introduced in 4.3.0 by SOLR-4196, but it is fundamentally broken in all 4.3 versions and not fixed until 4.4.  Using the [[Solr.xml (supported through 4.x)|old style solr.xml]] is recommended until Solr4.4 is released.  If you want to experiment with it now, download the source code or a nightly build for branch_4x.
  
  TODO: Lots to flesh out here, this is just barely a start for the docs, consider it a placeholder that will be expanded as time permits. Please ask any questions that come up on the user's list or whatever, and we'll expand this page. Or edit it yourself, all help appreciated!
+  * Please merge this page here: [[Solr.xml 4.4 and beyond]].
  
  Cores are no longer necessarily defined in in solr.xml. For the near term, solr.xml can exist either in the new or old styles. Whether solr.xml is interpreted as new or old-style is triggered by the absence or presence of a <cores> tag.
   * If there is a <cores> element, it is assumed to be an old-style solr.xml.