Use wild matching for lookup_name_info::match_any

Currently, lookup_name_info::match_any symbol_name_match_type::FULL.
However, this seems wrong.  Consider the expand_symtabs_matching
implementation of the cooked index: it compares name components, and
then if all the components match, it checks:

  if ((match_type == symbol_name_match_type::FULL
       || (lang != language_ada
	   && match_type == symbol_name_match_type::EXPRESSION)))
    {
      if (parent != nullptr)
	continue;

That is, if the component-matching loop did not finish, and a full
match is requested, then fail to match.  This handles cases where the
index is asked to look up "b::c" but finds "a::b::c".

However, match_any should match, well, any.  So, it seems to me that
checking any parent matches is irrelevant -- and therefore this should
use wild matching.