Most tests were using %swift or similar substitutions, which did not
include the target triple and SDK. The driver was defaulting to the
host OS. Thus, we could not run the tests when the standard library was
not built for OS X.
Swift SVN r24504
There's no real use for declaring a property or global variable without binding it to anything, and closure context mangling relies on having a name to associate with closures. Fixes crash suite #006 (rdar://problem/18232699).
Swift SVN r22105