swift234

-emit-sil: Don't print AST decls if we haven't type-checked the entire module.

The AST printer can't handle non-type-checked decls, so for now just only
print SIL if we're in -primary-file mode. That doesn't result in parseable
SIL, but it's better than crashing because we tried to print something
irrelevant from another file.

Swift SVN r21500