All classes (excluding the ones prefixed with underscores) in Foundation
and AppKit can now be loaded individually except CPOpenPanel and
CPSavePanel. These two classes have some sort of dependency cycle
that seems impossible to resolve without forward declarations (which
we don't have).
("cappuccino-body"). This let's external libraries, esp. flash ones, add things to the body without
Cappuccino getting rid of them as soon as the page loads.
Closes#421.