added some methods to MyTree
Added some methods to MyTree
added (uncomplete) heapSort to the class SortTest
completed heapSort, added Locator Priority Queue and MyPriorityQueue
(uncomplete)
Merge branch 'master' of https://github.com/PeterSchwab/AlgoDataFS13

Conflicts:
	src/examples/MyLinkedList.java
	src/examples/MyTree.java
	src/examples/SortTest.java