Changes

gcc-13 no longer maintains symbol files

gcc-13/13.2.0-20 removed crypt and crypt_r interceptors from libasan
without updating the symbol files. This isn't really a problem, because
we no longer build common libraries from gcc-13 in unstable. Here we do,
so ignore symbol errors.

drop ftcbfs patch #1057339 applied in dash/0.5.12-8