History for MagnetRON / src / org / ntlab / deltaViewer / CollaborationAliasCollector.java

Add CollaborationAliasCollectorTest and
CollaborationAliasCollector#sort(), Alias#getTimeStamp(), sample of
plural delta.

Create CollaborationObjectCallGraph to merge ExtractedStructure and add
relatedPoint, getCallTree().
Create IObjectLayout to create merge delta layout.