Bug Fixes:
- Kunai Splash (KO_HAPPOKUNAI) ammo check failure crashing map-server (bugreport:9112)
- Fear Breeze status (SC_FEARBREEZE) makes impossible to critical for single hit (bugreport:8197)
- Missing item avail check at NPC Cashshop causing item with item_avail cannot be bought (bugreport:9106)
- Swapped value between 'nk' and 'inf' for MH_LIGHT_OF_REGENE & MH_OVERED_BOOST
- Multi-hit by SC_FEARBREEZE that possibly causing map-server crashed if no ammo equipped
- Thank to all bug reporters
Misc:
- Add enum for clif_damage type, e_damage_type
- Add check for Autotrade Persistency, make sure to kick player who fail open vending/buyingstore

Signed-off-by: Cydh Ramdh <house.bad@gmail.com>