clif_misceffect2 redundancy

Originally posted by [b]theultramage[/b]
http://www.eathena.ws/board/index.php?autocom=bugtracker&showbug=2884

There are two functions, clif_misceffect2 and clif_specialeffect (and also potentially clif_weather_sub).

Both use the same packet, 0x1f3. The only difference is that specialeffect supports a 'send_target' parameter, and handles disguises. The misceffect2 function just sends it to AREA. There is also a _single version, whose code mimics clif_weather_sub.

This thing could use some normalization.