Bug Fixes:
- Failure when initializing autotrade persitance for PACKETVER < 20120201 or NEW_CARTS, ENABLE_SC_SAVING aren't defined
- Added 'feature.autotrade_open_delay' config at conf/battle/feature.conf to give delay to open vending/buyingstore by autotrade persistency (bugreport:9077)
- Add immediate save after vending/buyingstore opened to avoid missing sc_data (for SC_PUSH_CART) when server terminated before saving routine (bugreport:9077)
- Disable to trigger NPCE_LOGIN (and NPCE_LOADMAP?) for autotraders, avoid vending_reopen & buyingstore_reopen failure (bugreport:9077)
- Set player's state, 'monster_ignore' when autotrade
- EXP calculation overload (bugreport:9127)
- Added macro apply_rate(val,rate) & apply_rate2(val,rate,per)

Thank you all for reports & helps

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