swift234

[stdlib] Un-revert r14943: "Use the shims module to bridge NewArray"

[This time, shims.h doesn't depend even on a system header; hopefully the
'bot will be happy enough with that until someone fixes the build system
to allow "#include <stdint.h>" to appear in shims.h]

Now we can essentially send an NSRange instance in a message to a
CocoaArray without having loaded foundation.

Swift SVN r14957