Merge pull request #736 from sclukey/master

Author: swift-ci

Foundation/NSThread.swift

@@ -144,7 +144,7 @@ open class Thread : NSObject {
     internal var _status = _NSThreadStatus.initialized
     internal var _cancelled = false
     /// - Note: this differs from the Darwin implementation in that the keys must be Strings
-    open var threadDictionary = [String : AnyObject]()
+    open var threadDictionary = [String : Any]()
 
     internal init(thread: pthread_t) {
         // Note: even on Darwin this is a non-optional pthread_t; this is only used for valid threads, which are never null pointers.