Teach the llvm-readobj COFF dumper to dump debug line tables from object files

Reviewed at http://llvm-reviews.chandlerc.com/D2425

llvm-svn: 197674
diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index f84a72f..c09be74 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -128,6 +128,10 @@
   // -expand-relocs
   cl::opt<bool> ExpandRelocs("expand-relocs",
     cl::desc("Expand each shown relocation to multiple lines"));
+
+  // -codeview-linetables
+  cl::opt<bool> CodeViewLineTables("codeview-linetables",
+    cl::desc("Display CodeView line table information"));
 } // namespace opts
 
 static int ReturnValue = EXIT_SUCCESS;