OAK-1440: o.a.j.o.api.Tree.toString hits hidden nodes
Improve toString() implementation

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1571194 13f79535-47bb-0310-9956-ffa450edef68
OAK-1462 Aggregate Index isn't usable in an osgi environment
 - temp tweak of the cost output to make sure this index gets picked instead of the wrapped one



git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1571195 13f79535-47bb-0310-9956-ffa450edef68