remove boundary part
fix knn search issue (re-query from ori-query node when found target)
try to modify the weighting update method (not finished yet)
add node&graphpartHash, remove initial Cache
update all path when one query finished
add condition of checking the path return by walker in weightingfunction
found target or not
fix stepscounter don't reset issue & databaseOpt.getNodeHash issue(node
may have multiple partID, return random one)
add setBorderProbEdge method
completed borderShortcut algo
fix some condition problem for bordershortcut
Merge branch 'basic_algo'

Conflicts:
	src/main/java/netdb/graph/alg/KNNSearch.java