Now that the package daemon properly runs post-install actions
in hrev54986, such as creating users, we can remove the
work-around script files that did the same job. Make this
active for R1Beta3 for compatibility reasons.
Also add a post-install script, fix_openssh_config_paths.sh, which
makes the required changes to both ssh_config and sshd_config in
/boot/system/settings/ssh/ if needed. Original files are saved with
a .bak suffix. Moreover, default config files are also available in
/system/data/openssh/ as ssh_config.default and sshd_config.default.
