QmlJSInspector: Query Objects Iteratively

Currently all objects are recursively fetched when the root context
is retrieved. This patch fetches objects on demand.

Change-Id: Idf5c621ec38869dd5a676116bc4df528d7bb2fda
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

src/libs/qmljsdebugclient/qmlenginedebugclient.cpp

@@ -84,6 +84,7 @@ void QmlEngineDebugClient::decode(QDataStream &ds,
     o.m_source.m_lineNumber = data.lineNumber;
     o.m_source.m_columnNumber = data.columnNumber;
     o.m_contextDebugId = data.contextId;
+    o.m_needsMoreData = simple;
 
     if (simple)
         return;