[Server] Inadequate `RelinkZombies` performance

[MotoLegacy]

RelinkZombies, responsible for updating Zombie limb positioning, angles, and bounding box offset, takes a significantly long time to execute, shown by FTE's SSQC profiler.

quakec/source/server/main.qc

Lines 353 to 405 in 92f38d9

	void() RelinkZombies =
	{
	entity ent,ent2;
	local float i;
	local vector min, max;
	//warn
	ent = ent2 = world;
	while ((ent = find (ent, classname, "ai_zombie")))
	{
	if(ent.currentHitBoxSetup == 0)//empty bbox, we don't care to update
	continue;
	makevectors (ent.angles);
	for(i = 0; i < 3; i++)
	{
	if(i == 0)
	ent2 = ent.head;
	if(i == 1)
	ent2 = ent.larm;
	if(i == 2)
	ent2 = ent.rarm;
	if (ent2)
	{
	//setorigin (ent.head, ent.origin + v_right * ent.head.view_ofs_x + v_forward * ent.head.view_ofs_y + v_up * ent.head.view_ofs_z);
	setorigin (ent2, ent.origin);
	//fixme, move angles set and frame set to below the continue, we only want to update origin (maybe angles too?)
	ent2.angles = ent.angles;
	if(ent2.deadflag)
	ent2.frame = ent.frame;
	//if(OnlyOrigin)
	// continue;
	min = ent2.bbmins + (v_right * ent2.view_ofs_x) + (v_forward * ent2.view_ofs_y) + (v_up * ent2.view_ofs_z);
	max = ent2.bbmaxs + (v_right * ent2.view_ofs_x) + (v_forward * ent2.view_ofs_y) + (v_up * ent2.view_ofs_z);
	if(min_x > max_x) { min_x += max_x; max_x = min_x - max_x; min_x -= max_x; }
	if(min_y > max_y) { min_y += max_y; max_y = min_y - max_y; min_y -= max_y; }
	if(min_z > max_z) { min_z += max_z; max_z = min_z - max_z; min_z -= max_z; }
	setsize(ent2,min,max);
	}
	}
	}
	}

There are lingering checks for if a Zombie's origin is the only change made to the entity which should be re-instated, along with looking for alternatives to bounding box offset adjustments.