Clean up gdb.c++ tests for dwarf 1

[Jim Blandy]

Michael Elizabeth Chastain <mec@shout.net> writes:
> gdb HEAD%20030205 has loads of this stuff in the C++ test suite:
> 
>   setup_xfail_format "DWARF 1"
> 
> There are 81 instances of this.
> 
> Some test scripts have them, and some don't.  I'd like to get rid
> of them and replace them with something more coherent -- or nothing.
> 
> I see four choices.
> 
> (1) Just remove these calls to setup_xfail_format.  If someone runs the
>     gdb test suite with DWARF 1, the test suite will do its job and give
>     FAIL results for all the C++ tests that do not work with DWARF 1.

Your rationale here is that, since we don't really know which of these
failures are genuine, can't-be-done-with-Dwarf-1 expected failures,
and which are GDB bugs, you want to dump them all into the "genuine
bug" category and start re-categorizing, using our modern
interpretation of XFAIL and KFAIL?