Rebase to bash-5.0
- Remove 'bash-2.02-security.patch' patch as it does not seem to be
- Remove 'bash-2.05b-xcc.patch' as this change is already in upstream.
- Remove 'bash-4.1-defer-sigchld-trap.patch' as this patch was doing
nothing and this bug that it tried to solve should be fixed in upstream
- Remove 'bash-4.4-coverity.patch' as it has been upstreamed.
- Delete several other patches that were not removed while rebasing to