What has happened to FLyrVect's getRecordset and getSource methods?
The getSource and getRecordset methods were used to access a layer's data.
What is used now?
In version 2.0 the vector layers have a getFeatureStore method that returns a FeatureStore and provides access to both spatial and alphanumeric data.
If you just want to get all the layer's features you can invoke the getFeatureSet method of FeatureStore.