[ALOY-1021] Alloy: Add support for Alloy.CFG and Alloy.Globals in views

As the attached sample app shows, you can not use Alloy.CFG. and Alloy.Globals. in Alloy views. In the compiled code, they will end up as strings:

    $.__views.__alloyId0 = Ti.UI.createLabel({
        top: 50,
        text: "Alloy.CFG.foo",
        id: "__alloyId0"
    });

I would like to see that just like Ti. the Alloy. namespace would be detected and used as variable instead of string.