Follow-up on ALF-765 by upgrading EHCache to 2.0.0

- Fixed CacheTest to avoid disk flushes (configuration issues)
 - Allows Cache statistics to be turned off (done)
 - Added explicit switch to LruMemoryStore (raised https://jira.terracotta.org/jira/browse/EHC-652)
 - Removed EHCache usage within TransactionalCache (replaced with LruMap and Set)
 - Even with 'statistics=false' the EHCache code still messes about too much, but it's much better
 - TODO: Leave ripping out of ehcache-transactional.xml until DAO synch


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@19324 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/cache/EhCacheManagerFactoryBean.java

@@ -43,6 +43,13 @@ import org.springframework.core.io.Resource;
  */
 public class EhCacheManagerFactoryBean implements FactoryBean, InitializingBean, DisposableBean
 {
+    static
+    {
+        // https://jira.terracotta.org/jira/browse/EHC-652
+        // Force old-style LruMemoryStore
+        System.setProperty("net.sf.ehcache.use.classic.lru", "true");
+    }
+    
     protected final Log logger = LogFactory.getLog(EhCacheManagerFactoryBean.class);
 
     private Resource configLocation;