Add proper doxyments to the entry point routine, and remove a dead parameter.

llvm-svn: 142109
diff --git a/clang/lib/Frontend/TextDiagnostic.cpp b/clang/lib/Frontend/TextDiagnostic.cpp
index 259e05b..9bae0df 100644
--- a/clang/lib/Frontend/TextDiagnostic.cpp
+++ b/clang/lib/Frontend/TextDiagnostic.cpp
@@ -400,8 +400,7 @@
                                     DiagnosticsEngine::Level Level,
                                     StringRef Message,
                                     ArrayRef<CharSourceRange> Ranges,
-                                    ArrayRef<FixItHint> FixItHints,
-                                    bool LastCaretDiagnosticWasNote) {
+                                    ArrayRef<FixItHint> FixItHints) {
   PresumedLoc PLoc = getDiagnosticPresumedLoc(SM, Loc);
 
   // First, if this diagnostic is not in the main file, print out the