Get attaching to a crashed Windows process right (CDB).

Handle  the 2nd parameter correctly as a event id
to be used for a handshake. Introduce a special mode
when attaching to crashed processes.
Code cleanup, pass StartParameters along to startDebugger.

src/plugins/debugger/script/scriptengine.cpp

@@ -219,12 +219,12 @@ void ScriptEngine::exitDebugger()
     qq->notifyInferiorExited();
 }
 
-bool ScriptEngine::startDebugger()
+bool ScriptEngine::startDebugger(const QSharedPointer<DebuggerStartParameters> &sp)
 {
     m_stopped = false;
     m_stopOnNextLine = false;
     m_scriptEngine->abortEvaluation();
-    const QSharedPointer<DebuggerStartParameters> sp = q->startParameters();
+
     QFileInfo fi(sp->executable);
     m_scriptFileName = fi.absoluteFilePath();
     QFile scriptFile(m_scriptFileName);