Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
diff --git a/clang/lib/Tooling/Refactoring/ASTSelection.cpp b/clang/lib/Tooling/Refactoring/ASTSelection.cpp
index b8f996d..64e57af5 100644
--- a/clang/lib/Tooling/Refactoring/ASTSelection.cpp
+++ b/clang/lib/Tooling/Refactoring/ASTSelection.cpp
@@ -1,9 +1,8 @@
 //===--- ASTSelection.cpp - Clang refactoring library ---------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/clang/lib/Tooling/Refactoring/ASTSelectionRequirements.cpp b/clang/lib/Tooling/Refactoring/ASTSelectionRequirements.cpp
index c0232c5..14fc66a 100644
--- a/clang/lib/Tooling/Refactoring/ASTSelectionRequirements.cpp
+++ b/clang/lib/Tooling/Refactoring/ASTSelectionRequirements.cpp
@@ -1,9 +1,8 @@
 //===--- ASTSelectionRequirements.cpp - Clang refactoring library ---------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/clang/lib/Tooling/Refactoring/AtomicChange.cpp b/clang/lib/Tooling/Refactoring/AtomicChange.cpp
index e8b0fdb..4cf6330 100644
--- a/clang/lib/Tooling/Refactoring/AtomicChange.cpp
+++ b/clang/lib/Tooling/Refactoring/AtomicChange.cpp
@@ -1,9 +1,8 @@
 //===--- AtomicChange.cpp - AtomicChange implementation -----------------*- C++ -*-===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/clang/lib/Tooling/Refactoring/Extract/Extract.cpp b/clang/lib/Tooling/Refactoring/Extract/Extract.cpp
index 7a741bd..f5b94a4 100644
--- a/clang/lib/Tooling/Refactoring/Extract/Extract.cpp
+++ b/clang/lib/Tooling/Refactoring/Extract/Extract.cpp
@@ -1,9 +1,8 @@
 //===--- Extract.cpp - Clang refactoring library --------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 ///
diff --git a/clang/lib/Tooling/Refactoring/Extract/SourceExtraction.cpp b/clang/lib/Tooling/Refactoring/Extract/SourceExtraction.cpp
index 7fd8cc2..533c373 100644
--- a/clang/lib/Tooling/Refactoring/Extract/SourceExtraction.cpp
+++ b/clang/lib/Tooling/Refactoring/Extract/SourceExtraction.cpp
@@ -1,9 +1,8 @@
 //===--- SourceExtraction.cpp - Clang refactoring library -----------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/clang/lib/Tooling/Refactoring/Extract/SourceExtraction.h b/clang/lib/Tooling/Refactoring/Extract/SourceExtraction.h
index 4b4bd8b..545eb6c 100644
--- a/clang/lib/Tooling/Refactoring/Extract/SourceExtraction.h
+++ b/clang/lib/Tooling/Refactoring/Extract/SourceExtraction.h
@@ -1,9 +1,8 @@
 //===--- SourceExtraction.cpp - Clang refactoring library -----------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/clang/lib/Tooling/Refactoring/RefactoringActions.cpp b/clang/lib/Tooling/Refactoring/RefactoringActions.cpp
index 37a1639..1a38332 100644
--- a/clang/lib/Tooling/Refactoring/RefactoringActions.cpp
+++ b/clang/lib/Tooling/Refactoring/RefactoringActions.cpp
@@ -1,9 +1,8 @@
 //===--- RefactoringActions.cpp - Constructs refactoring actions ----------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/clang/lib/Tooling/Refactoring/Rename/RenamingAction.cpp b/clang/lib/Tooling/Refactoring/Rename/RenamingAction.cpp
index 44ffae9..3a9c477 100644
--- a/clang/lib/Tooling/Refactoring/Rename/RenamingAction.cpp
+++ b/clang/lib/Tooling/Refactoring/Rename/RenamingAction.cpp
@@ -1,9 +1,8 @@
 //===--- RenamingAction.cpp - Clang refactoring library -------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 ///
diff --git a/clang/lib/Tooling/Refactoring/Rename/SymbolOccurrences.cpp b/clang/lib/Tooling/Refactoring/Rename/SymbolOccurrences.cpp
index ea64b2c..8cc1ffa 100644
--- a/clang/lib/Tooling/Refactoring/Rename/SymbolOccurrences.cpp
+++ b/clang/lib/Tooling/Refactoring/Rename/SymbolOccurrences.cpp
@@ -1,9 +1,8 @@
 //===--- SymbolOccurrences.cpp - Clang refactoring library ----------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/clang/lib/Tooling/Refactoring/Rename/USRFinder.cpp b/clang/lib/Tooling/Refactoring/Rename/USRFinder.cpp
index 4ed805f..5511120 100644
--- a/clang/lib/Tooling/Refactoring/Rename/USRFinder.cpp
+++ b/clang/lib/Tooling/Refactoring/Rename/USRFinder.cpp
@@ -1,9 +1,8 @@
 //===--- USRFinder.cpp - Clang refactoring library ------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 ///
diff --git a/clang/lib/Tooling/Refactoring/Rename/USRFindingAction.cpp b/clang/lib/Tooling/Refactoring/Rename/USRFindingAction.cpp
index 2e7c9b0..54c6f3e 100644
--- a/clang/lib/Tooling/Refactoring/Rename/USRFindingAction.cpp
+++ b/clang/lib/Tooling/Refactoring/Rename/USRFindingAction.cpp
@@ -1,9 +1,8 @@
 //===--- USRFindingAction.cpp - Clang refactoring library -----------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 ///
diff --git a/clang/lib/Tooling/Refactoring/Rename/USRLocFinder.cpp b/clang/lib/Tooling/Refactoring/Rename/USRLocFinder.cpp
index 7f60cf5..1c88365 100644
--- a/clang/lib/Tooling/Refactoring/Rename/USRLocFinder.cpp
+++ b/clang/lib/Tooling/Refactoring/Rename/USRLocFinder.cpp
@@ -1,9 +1,8 @@
 //===--- USRLocFinder.cpp - Clang refactoring library ---------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 ///