Change the MachineDebugInfo to MachineModuleInfo to better reflect usage
for debugging and exception handling.

llvm-svn: 33550
diff --git a/llvm/lib/Transforms/IPO/Internalize.cpp b/llvm/lib/Transforms/IPO/Internalize.cpp
index bf99235..e5bacf6 100644
--- a/llvm/lib/Transforms/IPO/Internalize.cpp
+++ b/llvm/lib/Transforms/IPO/Internalize.cpp
@@ -120,8 +120,8 @@
   // attribute((used)).
   ExternalNames.insert("llvm.used");
   
-  // Never internalize anchors used by the debugger, else the debugger won't
-  // find them.  (see MachineDebugInfo.)
+  // Never internalize anchors used by the machine module info, else the info
+  // won't find them.  (see MachineModuleInfo.)
   ExternalNames.insert("llvm.dbg.compile_units");
   ExternalNames.insert("llvm.dbg.global_variables");
   ExternalNames.insert("llvm.dbg.subprograms");