pseudo code (comments) added for Frame.applyMethodSummary().
unnessary check for InternalObject.type() != null removed.
method InternalObject.resetEscapeState() added that creates a copy of
this object with NO_ESCAPE.
Some more code in Frame.applyMethodSummary().
Content of SummaryGraph inlined into ConnectionGraph, to make CG
independent of SG, and hence be able to change structure of SG.