Merge pull request #2783 from practicalswift/swiftc-28300-swift-type-transform

[swiftc] Add test case for crash triggered in swift::Type::transform(…)

Author: gribozavr

validation-test/compiler_crashers/28300-swift-type-transform.swift

@@ -0,0 +1,15 @@
+// This source file is part of the Swift.org open source project
+// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+
+// RUN: not --crash %target-swift-frontend %s -parse
+// REQUIRES: asserts
+class S<T{
+class A{
+func g:d
+var d={
+class B:A class e:B{
+func g