Make clear, that only full names are guaranteed to work in future
versions. The use of some abbreviations might break as new options
get added.
It would be rather complicated, to ensure, that abbreviations always
continue to work, at the additional disadvantage, that they no longer
uniquely identify an option. Instead, clearly state that using
them is not guaranteed to work in the future. Users that care about
long term compatibility should instead spell out the full names.
Abbreviations are mainly here for interactive use.
Signed-off-by: Thomas Haller <thaller@redhat.com>
600763e773