CallGraphBuilder uses ReflectionClassContextBuilder for resolving types
added breadth first traversal and traversal disruption to
NamedObjectDirectedGraph
Support method creation from Constructors
ClassContext supports correct resolution of virtual methods. Search the
super type hierarchy from bottom up.
Unit tests signature creation for constructors
finished support external method calls
fixed bug: ReflectionClassContextBuilder is robust in case of missing
types
removed logging of missing types from ReflectionClassContextBuilder
use getVirtualMethod to resolve calls
CallGraphBuilder and ClassContextBuilder report number of missing types
as warning