RFA: make it simpler to try debug_pubnames

[Tom Tromey]

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

Tom> Please check the comment before WANT_PUBNAMES.  I am not sure this is
Tom> actually an accurate assessment; my searches didn't turn up anything
Tom> relevant.

... probably because I didn't read dwarf2_build_psymtabs_easy even
enough to realize it isn't doing anything.  Sigh.  Aside from the
comment, though, this would still be mildly handy.

Tom