labeled are selected in the same way as with the remove command.
Update the manpage to have the selection options described for the
label command and referenced to it from the remove command.
The label can be specified on the command line with the -l option
or read from a file with the -f option. In both cases, the label
is assumed to be encoded in UTF-8.
PR: ia64/83124
MFC after: 1 week
