added unit test which expects external method call
produced failing test instead of exception. Added comments
no need for overloaded method createMethod
added (failing) test cases for loading external classes
SignatureUtil produces equal signatures for all kinds of types: BCEL
type and class loaded by classloader.
ClassContextBuilder adds all classes and interfaces referenced by the
loaded libraries to context (external classes)
class context builder collects missing types
removed unused commits
logging displays number of unresolved references
ClassContext supports finding of types by className
Extracted internal class ReflectionClassContextBuilder out of
ClassContextBuilder
renamed NamedObjectRepository to NamedObjectMap