[Solr Wiki] Update of "ShawnHeisey" by ShawnHeisey

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The "ShawnHeisey" page has been changed by ShawnHeisey:
https://wiki.apache.org/solr/ShawnHeisey?action=diff&rev1=52&rev2=53

Comment:
Not sure that IBM Java even uses HotSpot.  Remove that.

  
  There have been some very significant memory management improvements in each release of Java 8, particularly with garbage collection, both in general and specifically the G1 collector.  OpenJDK 8 should be almost as good as Oracle Java 8.
  
- It's not a good idea to use a JVM from IBM.  IBM aggressively enables HotSpot optimizations by default, which helps a lot with performance, but some of those optimizations cause Solr/Lucene to encounter bugs.
+ It's not a good idea to use a JVM from IBM.  IBM aggressively enables a large number of performance optimizations by default, which helps a lot with performance, but some of those optimizations cause Solr/Lucene to encounter bugs.
  
  OpenJDK should be fine, as long as it's 7 or later and meets the requirements of your Solr version.  The latest release is recommended.  OpenJDK 6 is known to have bugs.  If you can get an Oracle JVM, you should.