[clang-tidy][NFC] Switch to new file header style (#158497)

As decided in #118553 and following up #153942.

`rename_check.py` has small logic changes, everything else is a
mechanical replacement.

Author: localspook

clang-tools-extra/clang-tidy/ClangTidy.cpp

@@ -1,4 +1,4 @@
-//===--- tools/extra/clang-tidy/ClangTidy.cpp - Clang tidy tool -----------===//
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang-tools-extra/clang-tidy/ClangTidy.h

@@ -1,4 +1,4 @@
-//===--- ClangTidy.h - clang-tidy -------------------------------*- C++ -*-===//
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang-tools-extra/clang-tidy/ClangTidyCheck.cpp

@@ -1,4 +1,4 @@
-//===--- ClangTidyCheck.cpp - clang-tidy ------------------------*- C++ -*-===//
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang-tools-extra/clang-tidy/ClangTidyCheck.h

@@ -1,4 +1,4 @@
-//===--- ClangTidyCheck.h - clang-tidy --------------------------*- C++ -*-===//
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp

@@ -1,4 +1,4 @@
-//===--- tools/extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp ----------=== //
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.h

@@ -1,4 +1,4 @@
-//===--- ClangTidyDiagnosticConsumer.h - clang-tidy -------------*- C++ -*-===//
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang-tools-extra/clang-tidy/ClangTidyModule.cpp

@@ -1,4 +1,4 @@
-//===--- tools/extra/clang-tidy/ClangTidyModule.cpp - Clang tidy tool -----===//
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang-tools-extra/clang-tidy/ClangTidyModule.h

@@ -1,4 +1,4 @@
-//===--- ClangTidyModule.h - clang-tidy -------------------------*- C++ -*-===//
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang-tools-extra/clang-tidy/ClangTidyModuleRegistry.h

@@ -1,4 +1,4 @@
-//===--- ClangTidyModuleRegistry.h - clang-tidy -----------------*- C++ -*-===//
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.

clang-tools-extra/clang-tidy/ClangTidyOptions.cpp

@@ -1,4 +1,4 @@
-//===--- ClangTidyOptions.cpp - clang-tidy ----------------------*- C++ -*-===//
+//===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.