Some file deletions and renames lost during gcc conversion
As reported in https://gcc.gnu.org/ml/gcc/2019-12/msg00058.html, it appears that some file deletions and renames are not correctly reflected during a reposurgeon conversion of the gcc repository. I'm hoping that these will be resolved by the lift rewrite, in which case this issue can be closed without further action. But I'm recording this here as something we need to keep an eye on.