Update *recovery script command

another script command that rathena already having for months
http://trac.rathena.org/changeset/17321/rathena

no more atcommand @raise, @raisemap or @alive

feel free to improve the code
Nitpick. This `else` is unnecessary. In my opinion, and considering the high indentation level this block has, readability would be improved if this `else` is removed, and the two next lines unindented. Or, better yet, changed the whole block so that it looks like:

```
   ....
    case AREA:
        if (script_hasdata(st,4)) {
            int16 m, x1, xy1, x2, y2;
            if (!script_hasdata(st,5) || !script_hasdata(st,6) || !script_hasdata(st,7) || !script_hasdata(st,8)) {
                ShowError( "buildin_recovery: using type AREA but not enough arguments given !\n" );
                return false;
            }
            if ((m = map->mapname2mapid( script_getstr(st,4))) < 0) {
                ShowError("buildin_recovery: using type AREA but map not found !\n");
                return false;
            }
            x1 = script_getnum(st,5);
            y1 = script_getnum(st,6);
            x2 = script_getnum(st,7);
            y2 = script_getnum(st,8);
            map->foreachinarea(buildin_recovery_TYPE_bl, m, x1, y1, x2, y2, BL_PC, revive);
            break;
        } else {
            ....
        }
    ....
````