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
Considering that you can have this information for free, why not returning the amount of revived/healed characters? It's arguably useful, but since it's free, why not.