swift234

Clean up Parser::parseBraceItemList even more:

Extend the existing "isTerminatorForBraceItemListKind" logic to
handle the special case for top level code, instead of having
weird logic dumped in the middle of parseBraceItemList with no comments.

This logic is still seriously dubious, but at least it is out of the way
instead of dump into already really complex logic.


Swift SVN r4665