cp, ls, mv: Implement SELinux context handling

[a-wai]

Similarly to what is reported for install in #1809 several other GNU utilities such as cp, ls and mv implement similar options for dealing with files' security contexts:

• ls: -Z, --context print any security context of each file
• mv: -Z, --context set SELinux security context of destination file to default type
• cp: -Z set SELinux security context of destination file to default type (--context has a similar, but potentially different meaning here, and should also be considered)

[chadbrewbaker]

Would it make sense to optionally pass in a parameter list that does the full chmod/chown/chgrp/chattr?

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[tertsdiepraam]

Hasn't been fixed yet