swift234

Check the raw values of an @objc enum eagerly during decl validation.

For @objc enums, raw values determine the representation values, so we have
to compute them eagerly in order for switch statements to work. Similarly,
if the enum is broken, we have to /fail/ eagerly so that we don't fall down
later on in IRGen.

rdar://problem/19775284

Swift SVN r25282