Replaced BNode with DHTBucketTreeNode which is 2 times efficient. * src/BNode.cc: Removed * src/BNode.h: Removed * src/DHTBucketTree.cc * src/DHTBucketTree.h * src/DHTRoutingTable.cc * src/DHTRoutingTable.h * src/Makefile.am * test/BNodeTest.cc: Removed * test/DHTBucketTreeTest.cc * test/Makefile.am