[Clang-tools-extra] Fix Clang-tidy modernize-deprecated-headers warnings; other minor fixes

[Eugene.Zelenko]

Summary

I checked this patch on my own build on RHEL 6. Regressions were OK.

[aaron.ballman]

LGTM, thanks!

[etienneb]

lgtm

clang-query/QueryParser.h

 #include "Query.h"
 #include "QuerySession.h"
 #include "llvm/LineEditor/LineEditor.h"
-#include <stddef.h>
+#include <cstddef>
 
 namespace clang {
 namespace query {

 } // namespace query
 } // namespace clang
 
-#endif
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_QUERY_QUERY_PARSER_H

clang-rename/RenamingAction.cpp

 #include "clang/Tooling/CommonOptionsParser.h"
 #include "clang/Tooling/Refactoring.h"
 #include "clang/Tooling/Tooling.h"
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <string>
 #include <vector>
 

                                                 Replaces, PrintLocations);
 }
 
-}
-}
+} // namespace rename
+} // namespace clang

clang-rename/USRFindingAction.cpp

 #include "clang/Tooling/CommonOptionsParser.h"
 #include "clang/Tooling/Refactoring.h"
 #include "clang/Tooling/Tooling.h"
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <string>
 #include <vector>
 

clang-rename/tool/ClangRename.cpp

 #include "clang/Tooling/Tooling.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/Support/Host.h"
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
+#include <cstdlib>
 #include <string>
-#include <time.h>
-#include <vector>
 
 using namespace llvm;
 

pp-trace/PPCallbacksTracker.cpp

-//===--- PPCallbacksTracker.cpp - Preprocessor tracker -*--*-------------===//
+//===--- PPCallbacksTracker.cpp - Preprocessor tracker -*--*---------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
-//===--------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
 ///
 /// \file
 /// \brief Implementations for preprocessor tracking.
 ///
 /// See the header for details.
 ///
-//===--------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
 
 #include "PPCallbacksTracker.h"
 #include "clang/Lex/MacroArgs.h"
 #include "llvm/Support/raw_ostream.h"
-#include <stdarg.h>
-#include <stdio.h>
 
 // Utility functions.
 

unittests/clang-rename/USRLocFindingTest.cpp

 #include "gtest/gtest.h"
 #include <map>
 #include <set>
-#include <stdio.h>
 #include <vector>
 
 namespace clang {

   testOffsetGroups(VarTest, VarTestOffsets);
 }
 
-}
-}
-}
+} // namespace test
+} // namespace rename
+} // namespace clang