<rdar://problem/13298695>

Fixed LLDB to be able to correctly parse template parameters that have no name and no type. This can be triggered by the following LLVM/Clang code:

template <typename T, typename = void>
class SmallVectorTemplateCommon : public SmallVectorBase {

The “typename = void” was emitting DWARF with an empty DW_AT_name and no DW_AT_type. We now correctly infer that no DW_AT_type means “void” and that an empty name is ok.

This means you can now call functions on things that inherit from SmallVectorTemplateCommon.

llvm-svn: 180155