Aftercast Delay Updates

Originally posted by [b]Playtester[/b]
http://www.eathena.ws/board/index.php?autocom=bugtracker&showbug=214

Doddler and me tested this on Aegis and Official Servers. Skotlex already commited a small fix and I commited a fixed up skill_cast_db. However it's still only half of the truth. I'm posting here so people know how it should be (I'll try to do it somehow, but if it breaks something please report to me).

For all skills there is a rule: aftercast delay is always equal or more than aMotion

Examples:
(format: aspd -> aftercast delay in ms)

HEAL
0 -> 2000
50 -> 1500
100 -> 1000
150 -> 1000
190 -> 1000

DOUBLE STRAFE, ENVENOM, PIERCE, THROW VENOM KNIFE, THROW STONE
0 -> 2000
50 -> 1500
100 -> 1000
150 -> 500
190 -> 100

HOLY LIGHT, PICKUP STONE
0 -> 2000
50 -> 1500
100 -> 1000
150 -> 500
190 -> 100

Also unlike what Doddler thought, I found out that this rule is totally independant to cast time. If you notice any skill that doesn't work like that after my upcoming commit, then please post it here.