[Pharo-project] ODBC additions; very early GUI layer

I put two packages in PharoTaskForces. To any and all interested parties, I've added catalog methods to the existing ODBC wrapper. See the extension methods in ODBCConnection. You will have to excuse some gratuitous selectors that make my Dolphin ODBC code feel a little less unwelcome than it otherwise might. Gary, please take a quick look at the GUI package, in particular the TreeModel. Try TreePresenter example. I plan to make analogs to the staples from Dolphin's MVP framework: text, lists, trees, images. Value adapters will appear "soon." The handling of view resources will be a challenge. The usual caveats about backups appply, just in case. Bill