the "" and the suffix; that breaks names such as 'operator""if'. For symmetry,
also remove the space between the 'operator' and the '""'.
llvm-svn: 249641
nested-name-specifier, rather than crashing. (In fact, reject all
literal-operator-ids that have a non-namespace nested-name-specifier). The
grammar doesn't allow these in some cases, and in other cases does allow them
but instantiation will always fail.
llvm-svn: 196443