swift234

Forward SwiftObject's -description to use reflect(x).summary.

On the swift side, add an asmname'd "getSummary" function to make it easier for the runtime to access 'reflect(x).summary' (and to make it easy to change this when we get a real printing solution). On the C++ side, implement -description by trying to find convertStringToNSString if Foundation is loaded, and falling back to just returning @"SwiftObject" if not. It's unlikely SwiftObject's methods will be exercised if Foundation isn't loaded.

Swift SVN r17954