This is a complementary patch to "MINOR: tcp-act: Rename "set-{mark,tos}"
to "set-fc-{mark,tos}"", but for the Lua API.
set_mark and set_tos were kept as aliases for set_fc_mark and set_fc_tos
but they were marked as deprecated.
Using this opportunity to reorder set_mark and set_tos by alphabetical
order.