Improve LivingSetAttackEvent

[Ecdcaeb]

enable change the target in the event.
the existed hook is @Deprecated

Why I edit this event

The old event do not imple the redirection of target. When our mod involves it we have to use reflection or AT.

Why the old hook remained

I noticed that

//Optifine Helper Functions u.u, these are here specifically for Optifine
//Note: When using Optifine, these methods are invoked using reflection, which
//incurs a major performance penalty.

[Rongmario]

Update to new cleanroom + refresh patches + small changes and it can be pulled in.