Fix for regression in TestCPPStaticMethods.py due to refactoring in clang.
- Specify SC_Static given DIE attributes for static methods and operators.

Thanks to Wei Pan for his review and the help with root-causing.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@179727 91177308-0d34-0410-b5e6-96231b3b80d8