Kerbholz: holz_solo

Tags a monster so that if you kill it without any outside help(you can get
raise deads, heal alls and such), you get <SOLO> version to your finger
information and to your kerbholz. <SOLO> versions of monsters will be stacked
individually in kerbholz, not with the rest. <SOLO> tag will also be visible
when you echo your kills.

Few rules:
- you can tag only monster in full health
- you can tag only one monster at a time
- you cant tag a monster which has any spell/skill effects(like degeneration)
on it.
- you can't tag a monster if you have *any* effects in 'show effects'. Doesn't
matter if they have been done by you or somebody else... You can cast spell
and such to yourself *after* you have tagged the monster.
- if somebody else does x(some limit there) damage to your tagged monster, you
instantly loose the tag
- if somebody else casts an effect to your tagged monster, you instantly loose
the tag

- while having an active solo tag, if somebody else completes a skill or spell
in the same room with you, you instantly loose the tag.
(one problematic situation might be when you die and get raise dead and the
tarmalen starts to cast spells on you... in that case you just have to flee)

- if you get any 'show effects' done by somebody else, you instantly loose the
tag
- Messages when you get or loose a tag are to be very obvious. So you don't
accidentally miss them.
- having an active solo tag will appear as green <SOLO> text in your short
description so that other players can see it.