[clang] [clang][ssaf] Introduce entity abstraction for SSAF (PR #169131)

[Balázs Benics via cfe-commits]

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@@ -0,0 +1,84 @@
+//===- BuildNamespace.h -----------------------------------------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_ANALYSIS_SCALABLE_BUILD_NAMESPACE_H
+#define LLVM_CLANG_ANALYSIS_SCALABLE_BUILD_NAMESPACE_H
----------------
steakhal wrote:

I think in LLVM, the header guards should reflect the relative path.
https://llvm.org/docs/CodingStandards.html#header-guard
This applies to the other header guards as well.

```suggestion
#ifndef LLVM_CLANG_ANALYSIS_SCALABLE_MODEL_BUILDNAMESPACE_H
#define LLVM_CLANG_ANALYSIS_SCALABLE_MODEL_BUILDNAMESPACE_H
```

https://github.com/llvm/llvm-project/pull/169131