Stop Head-Spider host suicides

[Lady Birb]

So basically:

1. Disable *suicide when you're headspidered
   
2. Make it so *succumb, instead of killing you, instantly gives the changeling control
   
3. MAYBE, make it so dying in any way that doesn't gib you will give the changeling control
   
4. Probably increase the time it takes for the changeling to take over, so people have more of a chance to remove the headspider and/or gib themselves before it takes effect
   
5. Shameless plug for my suggestion from a while ago to make the headspider controlled by the changeling rather than NPC-controlled.