- Rewrote Warmth to use ground-skill-units, it should behave now like in officials (implementation is not quite the same, but it should yield the same effects while consuming less bandwidth). "Stacking", as it's called, is possible now, but limited to eA's minimum timer skill interval (100ms).
- Modified NPC_POWERUP so that it gives +10 dex * skill level rather than +5+lv to all stats (as explained by Playtester and Tharis on how the skill behaves).
git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@6446 54d463be-8e91-2dee-dedb-b68131a5f0ec