add Emacs tag and fix some comment error in file headers

llvm-svn: 150775
diff --git a/llvm/lib/Target/Mips/MipsTargetObjectFile.cpp b/llvm/lib/Target/Mips/MipsTargetObjectFile.cpp
index 05c46f5..edd538e 100644
--- a/llvm/lib/Target/Mips/MipsTargetObjectFile.cpp
+++ b/llvm/lib/Target/Mips/MipsTargetObjectFile.cpp
@@ -1,4 +1,4 @@
-//===-- MipsTargetObjectFile.cpp - Mips object files ----------------------===//
+//===-- MipsTargetObjectFile.cpp - Mips Object Files -----------*- C++ -*--===//
 //
 //                     The LLVM Compiler Infrastructure
 //