o Avoided a clone of the rootDSE when we need to get back a single value from it
o Added a method in the PartitionNexus interface to grab a single value from the rootDSE 
o Improved control that a searchRequest is done on the subscheaSubentry, by avoiding the parsing of the associated DN for every request

git-svn-id: https://svn.apache.org/repos/asf/directory/apacheds/trunk@1516093 13f79535-47bb-0310-9956-ffa450edef68