[patch] print a more useful error message for "gdb core"

[Tom Tromey]

>>>>> "Jan" == Jan Kratochvil <jan.kratochvil@redhat.com> writes:

Jan> I would prefer to try automatically loading it as a core file ("gdb
Jan> -c core") and to print a warning instead of error.  Fedora GDB is
Jan> patched for build-id (still not submitted for FSF) so that it can
Jan> find the executable in such case.

I agree, but I don't think this should block Doug's patch.
It seems to me that something like Doug's patch will be needed anyway,
if the build-id is not available.

Tom