Made the ThreadPoolExecutorFactory more configurable, but also with more sensible defaults.

- The queue for background jobs is unlimited
 - A smaller number of core threads is maintained
 - It is possible to set the threads' priority (default low)
Added hasAspect() method to XPath functions.
Various other cosmetic changes.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@6146 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/search/DocumentNavigator.java

@@ -559,4 +559,9 @@ public class DocumentNavigator extends DefaultNavigator implements NamedAccessNa
         QName nodeTypeQName = nodeService.getType(nodeRef);
         return dictionaryService.isSubClass(nodeTypeQName, typeQName);
     }
+
+    public Boolean hasAspect(NodeRef nodeRef, QName typeQName)
+    {
+        return nodeService.hasAspect(nodeRef, typeQName);
+    }
 }