pkg/symbolizer: nm -S does not work on openbsd

[dvyukov]

I've disabled pkg/symbolizer tests on openbsd because nm -S is not supported:
2e81ad1
Need to figure out the right way to do this on openbsd and re-enable the tests.

[dvyukov]

@mptre you mentioned that you manager to get coverage report on openbsd. I think this requires that nm works. Do you have some local changes for that?
@blackgnezdo FYI

[blackgnezdo]

If we could restore binutils port removed 13 years ago it would solve this issue.

https://cvsweb.openbsd.org/ports/devel/binutils/devel/pkg/Attic/PLIST?rev=1.1.1.1&content-type=text/x-cvsweb-markup

[mptre]

@mptre you mentioned that you manager to get coverage report on openbsd. I think this requires that nm works. Do you have some local changes for that?

I managed to get the coverage report working with syz-manager after fixing `addr2line(2)`. I have a pending diff that hopefully will be committed later this week. Will look into the failing `nm(1)` tests.

[mptre]

Coverage report should work in upcoming snapshots.

[blackgnezdo]

Coverage report should work in upcoming snapshots.

Thanks! I now have this in our images.