Expand 'checkvending' script
* Added returned values for buying store.
* Made returned values as bitmask. &1 - Vending, &2 - Autotrading, &4 - Buyingstore

Signed-off-by: Cydh Ramdh <house.bad@gmail.com>
Follow up bbe733e, typos

Signed-off-by: Cydh Ramdh <house.bad@gmail.com>
Merge pull request #120 from rathena/script/checkvending

Expand 'checkvending' script
* The returned value is bitmask of &1 - Vending, &2 - Autotrading, &4 - Buyingstore