[clang] modified AST for SEI redemption project (PR #111705)

[Nicholas Reimer via cfe-commits]

================
@@ -11,6 +11,22 @@
 // similar to RecursiveASTVisitor.
 //
 //===----------------------------------------------------------------------===//
+//
+// Modifications to this file by SEI staff are copyright Carnegie Mellon
+// University and contributed under the Apache License v2.0 with LLVM
+// Exceptions.
+//
+// SEI Contributions are made with funding sand support from the Department of
+// Defense under Contract No. FA8702-15-D-0002 with Carnegie Mellon University
+// for the operation of the Software Engineering Institute, a federally funded
+// research and development center.
+//
+// The view, opinions, and/or findings contained in this material are those of
+// the author(s) and should not be construed as an official Government position,
+// policy, or decision, unless designated by other documentation.
+// DM24-0194
----------------
sei-nreimer wrote:

Legal asked us to put those comments in originally. We're talking with the department now about removing them or putting them in a commit message. 

https://github.com/llvm/llvm-project/pull/111705