[PATCH] Move lookup_name_info creation into basic_lookup_transparent_type

[Tom Tromey]

>>>>> "Tom" == Tom Tromey <tromey@adacore.com> writes:

Tom> I noticed that basic_lookup_transparent_type calls two different
Tom> functions that both proceed to create a lookup_name_info.  It's more
Tom> efficient to create this object in the outermost layer possible.
Tom> Making this change required a few related changes, resulting in this
Tom> patch.

Tom> There are still more changs of this sort that could be made.

Tom> Regression tested on x86-64 Fedora 38.

I'm checking this in.

Tom