New warning in GDB 7.5

[Tom Tromey]

Eli> If you say that it should work even without DWARF, I will try, when I
Eli> have time.  Thanks.

Tom> Sorry, I know basically nothing about non-DWARF debuginfo.
Tom> The general design of gdb is such that, IMO, it could work; but whether
Tom> it actually does depends on the debuginfo reader.

I rebuilt emacs with -gstabs and my test worked fine.
I didn't try anything else.

Tom