CV2PDB::addDWARFEnum: provide a default name for enumeration types
CV2PDB::addDWARFEnum: provide a default name for enumeration types

It seems that UDTs (User Defined Types) are required to have names,
otherwise the resulting PDB type stream is considered to be corrupted.
So just like what we do for structure types, provide a default type name
for enumeration types.

rainers/cv2pdb,rainers/cv2pdb