RFA: fix PR 51649

[Tom Tromey]

>>>>> "Jakub" == Jakub Jelinek <jakub@redhat.com> writes:

Jakub> Well, even bad debugging experience problems would be very undesirable
Jakub> if we generated wrong debug info and everybody compiled it into their
Jakub> sources.  But pretty-printers stay on the side, it is just a matter of
Jakub> updating the python scripts and there is no need to recompile already
Jakub> compiled/linked programs/libraries.  So if properly tested, I think
Jakub> this could go in.

I tested them against gdb 7.3, 7.4 and trunk; configured both ways (with
--enable-symvers=gnu-versioned-namespace and the other way).

I also hacked the test suite so I could try gdb 7.2 (normally this is
rejected) and this worked as well as could be expected (7.2 had some
formatting issues leading to test suite failures -- but really it still
worked ok).

This patch also adds some test cases.

Unless you have other tests to suggest, I am going to say that it has
been sufficiently tested and check it in on Friday.

thanks,
Tom