in skill_require_db
- also commited a commented block for GS_FLING that needs to be looked at and posiably
cleaned before it's uncommented.
- fixed exp2 not accepting Gunslingers and ninjas
- fixed the "jobmaster" having the same problem as rebirth
- added the Gunslinger shops for guns and ammo [Reddozen]
git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@5783 54d463be-8e91-2dee-dedb-b68131a5f0ec