[12487] Improve alcohol handling

Fixes client crash when using Barbershop Chair while drunk

Also allow .mod drunk to modify the drunk state of the targeted player

Signed-off-by: stfx <stfx@hotmail.de>
[12488] Add visual vomiting to Spell::EffectInebriate

Vomit chance is guessed

Patch 3.2.0 (04-Aug-2009): A "Drunken Vomit" feature was implemented. This causes the character to "vomit" upon drinking too much alcohol.

Signed-off-by: stfx <stfx@hotmail.de>