Switch range operators ".." and "...".

- 1..3 now means 1,2
- 1...3 now means 1,2,3

Implements <rdar://problem/16839891>

Swift SVN r18066

stdlib/objc/Foundation/NSStringAPI.swift

@@ -30,7 +30,7 @@ extension NSArray {
     var length: Int = count
     var result = T[]()
     result.reserve(length)
-    for i in 0...length {
+    for i in 0..length {
       result.append(body(objectAtIndex(i)))
     }
     return result