fixed connection support

...ng/base/ui/compose/ConnectorConnectionCompositorBase.java

...ui/compose/HierarchicElementConnectionCompositorBase.java

...ooling/base/ui/editpart/LabeledConnectorEditPartBase.java

...oling/base/ui/editpart/figure/LabeledConnectorFigure.java

...g/base/ui/editpart/interfaces/IFreeConnectorEditPart.java

...base/ui/editpart/interfaces/IStickyConnectorEditPart.java

.../base/ui/layout/constants/RecommendedLayoutConstants.java

org.fortiss.tooling.base/trunk/META-INF/MANIFEST.MF

org.fortiss.tooling.base/trunk/model/base.ecore

org.fortiss.tooling.base/trunk/model/base.genmodel