Remove stray emacs mode markers in all these files that was causing emacs to
open them in fundamental-mode instead of c++-mode.
Also twiddle whitespace for consistency in ToolChains.cpp.

llvm-svn: 122646
diff --git a/clang/lib/Driver/Arg.cpp b/clang/lib/Driver/Arg.cpp
index 83d0d26..f1177cf 100644
--- a/clang/lib/Driver/Arg.cpp
+++ b/clang/lib/Driver/Arg.cpp
@@ -1,4 +1,4 @@
-//===--- Arg.cpp - Argument Implementations -----------------------------*-===//
+//===--- Arg.cpp - Argument Implementations -------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //