- new drug: etorphine (DRUG_TYPE_STUNANDKILL) stuns the user for its duration. Warning: Lethal if overdosed (lethal dose depends on boytype)
- show 'drugged' symbol for every drug (apart from alcohol)

git-svn-id: https://ja2svn.dyndns.org/source/ja2/trunk/GameSource/ja2_v1.13@5991 3b4a5df2-a311-0410-b5c6-a8a6f20db521