Built the native unwinder with all the warnings c++-4.2 could muster;
fixed them.  Added DISALLOW_COPY_AND_ASSIGN to classes that should
not be bitwise copied.  Added default initializers for member
variables that weren't being initialized in the ctor.  Fixed a few
shadowed local variable mistakes.

llvm-svn: 118240
diff --git a/lldb/source/Plugins/Process/Utility/UnwindLLDB.h b/lldb/source/Plugins/Process/Utility/UnwindLLDB.h
index f281269..128a4a7 100644
--- a/lldb/source/Plugins/Process/Utility/UnwindLLDB.h
+++ b/lldb/source/Plugins/Process/Utility/UnwindLLDB.h
@@ -56,6 +56,7 @@
         lldb::RegisterContextSP reg_ctx; // These are all RegisterContextLLDB's
 
         Cursor () : start_pc (LLDB_INVALID_ADDRESS), cfa (LLDB_INVALID_ADDRESS), sctx(), reg_ctx() { }
+        DISALLOW_COPY_AND_ASSIGN (Cursor);
     };
 
     typedef lldb::SharedPtr<Cursor>::Type CursorSP;