Debugger: Add a "use python dumper" setting

Change-Id: I8bed1a8641e5cf46f50f7c9fced9a1b6c01964ed
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/debugger/cdb/cdbengine.cpp

@@ -657,7 +657,8 @@ void CdbEngine::setupInferior()
                 + " maxStackDepth="
                 + action(MaximalStackDepth)->value().toString(), NoFlags});
 
-    runCommand({"print(sys.version)", ScriptCommand, CB(setupScripting)});
+    if (boolSetting(CdbUsePythonDumper))
+        runCommand({"print(sys.version)", ScriptCommand, CB(setupScripting)});
 
     runCommand({"pid", ExtensionCommand, [this](const DebuggerResponse &response) {
         // Fails for core dumps.