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

（relatedPoints のソート順が違っていたため．）

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

Add IObjectCallGraph, MagnetRONViewer is parent of DeltaViewer,
CollaborationViewer.