Fix parameter name comments using clang-tidy. NFC.

This patch applies clang-tidy's bugprone-argument-comment tool
to LLVM, clang and lld source trees. Here is how I created this
patch:

$ git clone https://github.com/llvm/llvm-project.git
$ cd llvm-project
$ mkdir build
$ cd build
$ cmake -GNinja -DCMAKE_BUILD_TYPE=Debug \
    -DLLVM_ENABLE_PROJECTS='clang;lld;clang-tools-extra' \
    -DCMAKE_EXPORT_COMPILE_COMMANDS=On -DLLVM_ENABLE_LLD=On \
    -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ ../llvm
$ ninja
$ parallel clang-tidy -checks='-*,bugprone-argument-comment' \
    -config='{CheckOptions: [{key: StrictMode, value: 1}]}' -fix \
    ::: ../llvm/lib/**/*.{cpp,h} ../clang/lib/**/*.{cpp,h} ../lld/**/*.{cpp,h}

llvm-svn: 366177
diff --git a/clang/lib/Lex/PPDirectives.cpp b/clang/lib/Lex/PPDirectives.cpp
index 311c0e0..2756042 100644
--- a/clang/lib/Lex/PPDirectives.cpp
+++ b/clang/lib/Lex/PPDirectives.cpp
@@ -1419,7 +1419,7 @@
 
   // Note that this macro has now been exported.
   appendMacroDirective(II, AllocateVisibilityMacroDirective(
-                                MacroNameTok.getLocation(), /*IsPublic=*/true));
+                                MacroNameTok.getLocation(), /*isPublic=*/true));
 }
 
 /// Handle a #private directive.
@@ -1446,7 +1446,7 @@
 
   // Note that this macro has now been marked private.
   appendMacroDirective(II, AllocateVisibilityMacroDirective(
-                               MacroNameTok.getLocation(), /*IsPublic=*/false));
+                               MacroNameTok.getLocation(), /*isPublic=*/false));
 }
 
 //===----------------------------------------------------------------------===//
@@ -1937,7 +1937,7 @@
     // and making the module loader convert it back again.
     ModuleLoadResult Imported = TheModuleLoader.loadModule(
         IncludeTok.getLocation(), Path, Module::Hidden,
-        /*IsIncludeDirective=*/true);
+        /*IsInclusionDirective=*/true);
     assert((Imported == nullptr || Imported == SuggestedModule.getModule()) &&
            "the imported module is different than the suggested one");